Questions Asked on
November 29, 2010

  1. chemistry

    The following data were collected at the endpoint of a titration performed to find the molarity of an HCl solution: Volume of acid (HCl) used = 14.4 mL; Volume of base (NaOH) used = 22.4 mL; Molarity of standard base (NaOH) = 0.200 M; What is the molarity

    asked by vin
  2. chemistry

    Given the table of Ka values on the right below, arrange the conjugate bases in order from strongest to weakest. Acid Ka HClO 3.5 e-8 HClO2 1.2 e-2 HCN 6.2 e-10 H2PO4- 6.2 e-8 A. ClO2-, ClO¬-, HPO42-, CN- B. ClO2-, HPO42-, ClO¬-, CN- C. CN-, HPO42-,

    asked by linda
  3. Biomechanics

    If an average net force of 20N at 45* is applied to a 0.35 kg water balloon for 0.12s. how far away should the catcher stand? Assume release height and cathc height are the same and air resistance is not a factor.

    asked by Bob
  4. chemistry

    What would be the resulting molarity of a solution made by dissolving 21.9 grams of KCl in enough water to make an 869-milliliter solution?

    asked by smith
  5. chemistry

    If 35.8 grams of LiCl are dissolved in 184 grams of water, what is the concentration of the solution in percent by mass?

    asked by smith
  6. chemistry

    What is the mass of 5.00 moles of Pb(CH3COO)2?

    asked by jeff
  7. chemistry

    How many molecules are 100.00 grams of H2O?

    asked by jeff
  8. physics

    Spirit of Australia, a hydroplane boat, made speed records by traveling 239 miles in 0.75 hours. What is its record breaking speed?

    asked by cori
  9. chemistry

    Why is the ionic compound NaCl (table salt) able to dissolve in a glass of the molecular compound water (H2O)?

    asked by smith
  10. Chemistry

    which formula is correctly paired with its name? 1.MgCl2 magnesium dichloride 2.N2O5 dinotrogen pentoxide 3.H20 hydrogen oxide 4.CuCl2, copper (III) chloride please help! i think its1 or 4

    asked by Anonymous
  11. Chem 20

    Calculate the mass of strontium hydroxide required to make a 450-mL solution with a pOH of 4.00. Step 1: Find pOH. I found that pOH is 10. The next steps is where I'm stuck. Step 2 :Calculate the hydroxide ion concentration. Express your answer in

    asked by Anonymous
  12. pre calc

    prove identity cscx-(cosx)(cotx)=sinx

    asked by logan
  13. Chemistry

    235.over.92U + 1.over.n ---> 90.over.38Sr + 3 1.over.n + ??

    asked by Gman
  14. test

    235U 92

    asked by d
  15. computer,plz...give me answer fast

    a company decides to sell the game on a cd rom instead of many floppy disks ,state 3 reasons why they should do this?

    asked by sweetie
  16. computer

    explain the need for back up procedures.describe suitable backup procedures for home,including how often backups should be taken and where they should kept?

    asked by sweetie
  17. english

    At my son’s very first softball game his team did not do very well. No one seemed to be able to hit the ball or run the bases when they were up to bat. When they were in the field they would either run from the ball or be nowhere near it when they

    asked by melissa
  18. computer

    what are the similarities and differences between main memory and hard disk.atleast write 5 points.

    asked by sweetie
  19. math

    Compute the effective rate of interest given the nominal rate of 7 3/8% compounded monthly

    asked by Anonymous
  20. physics

    A yo-yo is made of two solid cylindrical disks, each of mass 0.053 kg and diameter 0.073 m, joined by a (concentric) thin solid cylindrical hub of mass 0.0052 kg and diameter 0.012 m. Use conservation of energy to calculate the linear speed of the yo-yo

    asked by Sasha
  21. Calculus - MathMate Please help

    I asked this question on last thursday and u told me that the bottom limit for the 1st and the right limit for the 2nd area is missing? The question that i posted had no other information and i don't know why you said that the limits are missing. There is

    asked by K
  22. history 1945 and up

    explain how the policies introduced suring the reagan presidency contributed to conservative politics and stimulation of the economy.

    asked by cristee
  23. Physics

    A car is travelling with a 5m/s in 25 minutes at a distance of 30cm calculate initial velocity and declaration of the car.

    asked by Abdullah
  24. Physics

    A car is travelling with a 5m/s in 25 minutes at a distance of 30cm calculate initial velocity and declaration of the car.

    asked by Abdullah
  25. chemistry

    An old bottle of 12.3 M hydrochloric acid has only 33 mL left in it. What is the HCl concentration if enough water is added so that the final volume is 513 mL?

    asked by masin
  26. math

    how can i find c , f', g' from (1+cx)(f')-cx(g')/(1+cx)^2

    asked by thy
  27. history 1945 and up

    • Final Project: Most Significant Events • Resources: Appendix A • Write a 1,750- to 2,050-word essay in which you: 1. Choose one social, economic, or political topic/issue/theme that you think had the most powerful effect on the development of the

    asked by cristee
  28. Math - derivative of sinusoidal (check)

    a) Find a function y=f(x) that satisfies the differential equation dy/dx = fifth derivative. This is one of the questions in my practice test, I tried the basic equation of the trig function such as f(x)= sin(x) or f(x)=-sin(x) however in the fourth

    asked by Farah
  29. C++ Programming

    Video Game Player Program Write a program to do the following. In main declare a Player Name Array and a Score Array. Declare the size of the arrays to be 100. In the InputData function input the player name and score into the arrays for an unknown number

    asked by Jeffry
  30. Physics

    ______1. Which of the following is NOT true about a stone dropped from the third floor of the high school building? A. It is a free-falling object. B. It accelerates at the rate of 9.8 m/s2. C. It decelerates at the rate of 9.8 m/s2. D. Its initial

    asked by Joshua
  31. chemistry

    equation of the reaction of hydrochloric acid and iron sulphide

    asked by melody
  32. financial accounting and reporting

    january 01,2007 Mr.A started a business with cash Rs.3000,000 Bank RS.4000,000, Building Rs.3000,000,Laptop Rs.80,000, Desktop computers Rs.50,000,Fax machine Rs.100,000,Simple calculators Rs.5,000, Financial calculators Rs.10,000, Printer Rs.35,000,

    asked by saedd
  33. Math

    2^x = (3/2)^6 solve for x

    asked by Gray
  34. physics

    Posted by sandhu on Sunday, November 28, 2010 at 10:03pm. A 7200 lb airplane lands on an aircraft carrier with a speed of 72 ft/s. The plane is caught by an elastic band (k=998 lb/ft) that has an initial stretch of 5.6 feet. What is the maximum distance

    asked by sandhu
  35. English (Grade 6)

    What is the best website to practice direct and indirect speech, adjectives and verbs for free? Thank you

    asked by Tiffany
  36. history

    What social, economic, and political factors led to the need for the formation of labor unions?

    asked by Katey
  37. math

    (2x+3)-(5x-7)/6x+11=-8/3

    asked by Hitesh
  38. chemistry

    -Suppose you carry out TLC separation of acetaminophen and ibuprofen on silica ggel using a nonpolaar developing solvent. which should have a higher Rf? -Assuming that the drug components whose spots you identified dissolved completely when you stirred the

    asked by tristan
  39. comm155

    help write: Write a paragraph, using several sentences, to describe a recent interaction with a friend or family member about personal finance or credit cards. This interaction may be imagined or real. Use at least five different pronouns in your

    asked by queen
  40. physics

    A harmonic wave moving in the positive x direction has an amplitude of 3.1 cm, a speed of 37.0 cm/s, and a wavelength of 26.0 cm. Assume that the displacement is zero at x = 0 and t = 0. Calculate the displacement (in cm) due to the wave at x = 0.0 cm, t =

    asked by Anonymous
  41. Chemistry

    In an experiment liquid hexane, C6H14 (l) is combusted completely to produce CO2(g) and H2O (l) according to the equation: 2 C6H14 (l) + 19 O2(g) -> 12 CO2(g) + 14H2O (l) The change in H degrees for the reaction is -8.39 x 10^3 KJ. Calculate change in H

    asked by vvvvvv
  42. English

    Can you please check these sentences on Shelleys's Frankenstein? Thank you very much for your help. 1) The monster can be compared to Rousseau’s primitive man, since he comes to life free from social constrictions and unspoilt by civilization. 2)However,

    asked by Franco
  43. English

    I forgot to include the following sentences.I really hope you can have a look at them, too. 1) Coleridge’s Rime of the Ancient Mariner and Shelley’s Frankenstein share similarities. Actually, both the shooting of the albatross and the creation of the

    asked by Franco
  44. chemistry

    Most elements are stable with eight (8) valence electrons. True or False Elements react in order to gain, lose, or share electrons. True or False

    asked by samantha
  45. statistics

    the following sample observations were randomly selected: x: 2,5,6,8,9,11,15 y: 22,23,16,18,19,13,12 a)calculate the correlation coefficient, r b) determine the regression equation c) determine the value of Y when X=20

    asked by skitter
  46. chemistry

    What is the total number of valence electrons that must be shown in the Lewis structure for magnesium fluoride I think 16 but im not sure

    asked by samantha
  47. Chemistry Help

    Which of the following species are isoelectronic? Select all that apply. 1) S^2- 2) Be^2+ 3) Cl^- 4) K^+ 5) Ca^2+ 6) Se^2-

    asked by Amy
  48. math

    number patterns write the next 2 terms for the pattern 2,4,8,32,--,--.

    asked by ty_11
  49. math

    how long will it take to earn $525 in interest if $3500 is invested at 6% annual interest rate ?

    asked by teeka
  50. us history

    The Mayflower compact is an example of which concept?

    asked by Tim
  51. College Chemistry

    If current is passed in an electrolytic cell containing sodium nitrate, NaNO3, dissolved in water, what are the products at the anode and the cathode? If it's dissolved in water then it is: NaNO3 -> Na+ + NO3- right? So you have... Anode: NaNO3 -> Na+ + e-

    asked by James
  52. Chemistry

    In each of the following pairs, choose the species with the larger radius. 1) S^4+ or S^2+ 2) S or S^2-

    asked by Amy
  53. Physics

    Thanks you alot for correction. A car is travelling with a 5m/s in 25 minutes at a distance of 30 cm calculate initial velocity and decelaration of the car.

    asked by Abdullah
  54. Physics

    Thanks you alot for correction. A car is travelling with a 5m/s in 25 minutes at a distance of 30 cm calculate initial velocity and decelaration of the car.

    asked by Abdullah
  55. Physics

    Thanks you alot for correction. A car is travelling with a 5m/s in 25 minutes at a distance of 30 cm calculate initial velocity and decelaration of the car.

    asked by Abdullah
  56. Calculus

    If the region in the first quadrant bounded by the graph of y=cosx and the interval[0,pi/2] is bisected by the line x=c, guess c.

    asked by Farva
  57. Chemistry

    Which of the following electron configurations is not consistent with Hund's rule? 1) 1s^2 2s^2 2p^2 3s^1 2) 1s^2 2s^2 2p^6 3s^2 3p^5 3) 1s^2 2s^2 2p^6 3s^3 3p^6 4) 1s^2 2s^2 2px^2 2py^1

    asked by David
  58. Ap chemistry

    A 20mL sample of .200M potassium dichromate solution is added to 30 ml of .4M silver nitrate. What is the balnced molecular equation?

    asked by Sarah McKee
  59. Physics

    Thanks you alot for correction. A car is travelling with a 5m/s in 25 minutes at a distance of 30 cm calculate initial velocity and decelaration of the car

    asked by Abdullah
  60. math

    Farmer Frank's pumpkin patch had 360 pumpkins and he was searching for perfect pumpkins to sell at his farm stand. As he walked through his pumpkin patch, he noted the following: Every third pumpkin had no stem. Every sixth pumpkin was too small. Every

    asked by Susan
  61. Algebra

    What is the value of x such that the list 100, 102, 104, x, x, 106, 104, 118, 113, 101 has the same mean and mode?

    asked by Tony
  62. Chemistry

    What is the concentration, in w/w%, of a solution prepared from 50.0 grams NaCl and 150.0 grams of water? I think it would be 25.0%, but I'm struggling with these new concentration calculations.

    asked by Ann
  63. Physics

    A player is 6.5 ft tall.What is the player’s height in meters?

    asked by JJ
  64. math

    37 is what percent of 58?

    asked by de
  65. chem

    what are 6 elemts that make up Yellow Gold? What are 6 elements that make up White Gold? What are 5 elements for platinum for gemstone settings? what are 2 elements that make up palladium for gemstone settings? what is 1 element that makes up a diamond? 3

    asked by samantha
  66. math

    express 0.028 as a percent

    asked by Anonymous
  67. geometry

    In an isosceles trapezoid, the longest base is 11", a leg is 5", and the height is 4". Find the length of the shorter base of the trapezoid.

    asked by gayle
  68. economics

    What were greenbacks?

    asked by patrick
  69. Chemistry

    An aqueous mixture containing starch, NaCl, glucose and albumin is placed in a dialyzing bag and immersed in distilled water. Which of the following, correctly describes the location of the indicated substance after dialysis? A. albumin, inside B. starch

    asked by Beth
  70. Chemistry

    A solution that has an osmotic pressure greater than that of red blood cells is called?

    asked by Ann
  71. Chemistry

    I'm having trouble with molarity. What is the molarity of a KCl solution made by diluting 75.0 mL of a 0.200 M solution to a final volume of 100.0 mL?

    asked by Madison
  72. chem

    A solution is prepared with 50.0 g of HNO3 and 130.0 g of H2O. It has a density of 1.21 g/mL. What is its molarity (M)?

    asked by Michelle
  73. 7th grade Pre algebra( math honors0

    triangle ABC is smilar to triangle FED Ab= 12 Ac=15 De=4 df=5 1. write three equal ratios to show correspnding sides are prosportional. 2. find the value of bc 3. find the value of ef.

    asked by panda
  74. chem

    158.5 mL of a AgNO3 solution at 5.0M was combined with a 3.5M CaCl2 solution. 110.5g of AgCl was recovered. Given that the CaCl2 is the limiting reagent, how many milliliters of the 3.5M CaCl2 solution was used? 2 sig figs

    asked by Michelle
  75. statistics

    In one history class, 34 students took an exam. The mean of the exam was 52 with a standard deviation of 13. If the instructor is going to assume data are normally distributed and assign grades on a curve, then she will assign an A to the top 10% of the

    asked by melissa
  76. Finance

    RCA made a coupon payment yesterday on its 6.25% bonds that mature in 11.5 years. If the required return on these bonds is 9.2% nominal annual, what should be the market price of these bonds?

    asked by Anonymous
  77. adv. algebra

    1)SIMPLIFY i^2 square root of -80 2)SOLVE 49x^2+100=0 3)14-i^6 divided by i

    asked by kaleb
  78. Physics

    A store owner wishes to hang a sign weighing 750 N so that Cable A attached to the store makes a 30 degree angle from the vertical wall. Cable B is attached horizontally to an adjoining building. Calculate the necessaryt tension on Cable B.

    asked by Jim
  79. Physics

    A box weighing 215 N is placed on an inclined plane that makes a 55 degree angle with the horizontal. Compute the component of the gravitional force acting down the inclined plane.

    asked by Jim
  80. 8th grade

    how many 2-kg and how many 5-kg plates go onto the bar to make 34-kg.

    asked by cassy
  81. Physics

    A pilot wishes to fly 450 km due south in 3 hours. A wind is blowing from the west at 50 km/hr. By means of a vector diagram, compute the proper heading and speed that the pilot must choose to achieve this objective.

    asked by Shayne
  82. Economics

    A market (or industry) demand curve is described by Q = 50 – 0.5 P The firm’s cost function is TC = 10 + 2 Q a. Find the profit-maximizing quantity and price. b. If the industry is regulated in a way that requires it to set P = AC, how much will be

    asked by hiten
  83. Economics

    Suppose a monopolistically competitive firm’s demand is given by P = 100 – 2Q And its cost function is given by TC = 5 + 2Q a. Find the profit maximizing quantity, price, and total profit level. b. Is this a long-run or a short-run outcome? How do you

    asked by hiten
  84. Economics

    Suppose a perfectly competitive firm has a cost function described by TC = 100 + Q2 The industry price is $100. a. Find the profit maximizing level of output. b. Is this a short-run or long-run situation? How do you know? c. Assuming that this firm’s

    asked by hiten
  85. mat 156

    The following algorithm give a correct answer 488 +_65_ 5^1 5^1 3 Explain why the algorithm works

    asked by susan
  86. Chem

    Please tell me if these are right? A mixture of oxygen and helium is prepared for a scuba diver that will descend to 125 feet below the ocean surface. At that depth the diver breathes a gas mixture that has a total pressure of 8atm. If the particle

    asked by Lindsay
  87. Fine Art

    1. Wooden temples were considered an art form from a. Japan b. China c. Buddhists d. Indians A 12. Which of the following colors represents the spiritual realm in many African societies? a. White b. Red c. Black d. Brown Not sure... 13. Shiva Nataraja

    asked by mysterychicken
  88. Math/Statistics

    The mean starting salary for graduates in the spring of 2004 was $36,280. Assume that the distribution of starting salaries follows the normal distribution with a standard deviation of $3,300. What percent of the graduates have starting salaries between

    asked by Dave
  89. statistics

    Q. The MBA department is concerned that dual degree students may be receiving lower grades than the regular MBA students. Two independent random samples have been selected. 100 observations from population 1 (dual degree students) and 100 from population 2

    asked by jeen
  90. stat

    1. The MBA department is concerned that dual degree students may be receiving lower grades than the regular MBA students. Two independent random samples have been selected 350 observations from population 1 (dual degree students) and 310 from population 2

    asked by jeen
  91. Calculus

    A particle moves along the x-axis with position at time t given by x(t)=e^(-t)sin(t) for 0 is less than or equal to t which is less than or equal to 2 pi. a) Find the time t at which the particle is farthest to the left. Justify your answer I think you

    asked by Leanna
  92. Chemistry

    Which of the following electron configurations is not consistent with Hund's rule? 1) 1s^2 2s^2 2p^2 3s^1 2) 1s^2 2s^2 2p^6 3s^2 3p^5 3) 1s^2 2s^2 2p^6 3s^3 3p^6 4) 1s^2 2s^2 2px^2 2py^1

    asked by David
  93. Chemistry

    Which of the following species are isoelectronic? Select all that apply. 1) S^2- 2) Be^2+ 3) Cl^- 4) K^+ 5) Ca^2+ 6) Se^2-

    asked by Amy
  94. Chemistry

    In each of the following pairs, choose the species with the larger radius. 1) S^4+ or S^2+ 2) S or S^2-

    asked by Amy
  95. physics

    how much work does a woman do if she exerts a force of 75N for 3m?

    asked by nOEL lOYALL
  96. Finance

    Agency theory deals with the issue of Answer when to hire an agent to represent the firm in negotiations. the legal liabilities of a firm if an employee, acting as the firm's agent, injures someone. the limitations placed on an employee acting as the

    asked by Anonymous
  97. Algebra 2

    Find the value of: 5+8×2÷4-11. A. -23/4 B. -11/2 C. -3 D. -2 I chose answer choice D, am I correct?

    asked by anthony
  98. com 156

    What are some red flags that indicate you should avoid a particular source?

    asked by jojo
  99. algebra

    Evaluate (a-y)2(squared) +2y3(cubed), if a =2 and y=-3 A. -29 B. 43 C. 79 D. -53 I got answer choice A, am I correct?

    asked by anthony
  100. Physics

    A 6.0- m-long string has a mass of 12.5 g. Transverse waves propagate along the string with a speed of 189.0 m/s. One end of the string is forced to oscillate at 120.0Hz with an amplitude of 0.470 cm. What power is transmitted along the string?

    asked by Anonymous
  101. Pre-Algebra

    The length of a rectangular jewelry box is 5 inches more than twice the width. The perimeter is 28 inches. Find the length and the width.

    asked by Willie
  102. Calculus

    Use the given derivative to find all critical points of 'f' and at each critical point determine whether a relative maximum, relative minimum, or neither occurs. Assume that 'f' is continuous everywhere. f' (x) = (1-2x)/ ∛(x+3) ∛(x+3)in words is the

    asked by Roy
  103. us history

    Which side did the federal government choose to support in the major strikes of the late 1800s? What actions did the government take?

    asked by Jory
  104. Calculus

    Find all values of x, where the graph of y = [(5x^3)-(6x)+(8)] / (x^2) crosses its oblique asymptote.

    asked by Raj
  105. Physics

    A physics student wants to build a spring gun that when aimed horizontally will give a 15.0- g ball an initial acceleration of 'g' by releasing a spring that has been compressed 15.0 cm. The spring constant is .981. What is the velocity of the ball as it

    asked by Anonymous
  106. Microeconomincs

    1-Find an article that deals with current labor issues. 2- Find and article that talks about the competitive nature of international business. 3- Find and article that deals with market competition, either in general or a specific firm's competitive

    asked by john
  107. Calculus

    Verify that the hypotheses of the Mean-Value Theorem are satisfied for f(x) = √(16-x^2 ) on the interval [-4,1] and find all values of C in this interval that satisfy the conclusion of the theorem.

    asked by Ronnie
  108. spanish

    Natalia viajó al Perú. Escribió una lista de lo que va a hacer al volver a casa. Contesta las preguntas según la información de la lista. Modelo: ¿Qué va a hacer ella con el poncho? Va a regalárselo a Óscar. And then there is a table given:

    asked by rafay
  109. mumford

    decide whether the function is linear. then evaluate the function for the given value of x. f(x)=x-11:f(4)

    asked by james smith
  110. spanish

    Direct- and indirect-object pronouns combined 8-16 Dos amigas hablan. Completa las oraciones. MARÍA: Juanita, ¿quién ______ mandó las flores? JUANITA: Alejandro ____, ____ mandó. MARÍA: ¿Vas a mostrar ____ a tus papás? JUANITA: Sí, ____ , ______

    asked by kate
  111. Chem

    Please help are these right? A 2.3 mole sample of nitrogen (N2), has a volume of 50.0 L and a pressure of 630 mmHg. What is the temperature of the gas? 41.5 C which I converted to Kelvin and got 231.5K Calculate the molarity (M) of the following solutions:

    asked by Jada
  112. capitalization

    Aunt consuelo melendez, doctor of surgery.

    asked by nequita pierce
  113. Microeconomics

    1-Find an article that deals with current labor issues. 2- Find and article that talks about the competitive nature of international business. 3- Find and article that deals with market competition, either in general or a specific firm's competitive

    asked by john
  114. Microeconomics

    1-Find an article that deals with current labor issues. 2- Find and article that talks about the competitive nature of international business. 3- Find and article that deals with market competition, either in general or a specific firm's competitive

    asked by john
  115. english

    The paragraph should demonstrate your ability to use sentence variety and proper punctuation. Your audience is your classmates. Begin with a 2-3 sentence description of the scene. Then add 6-8 lines of dialogue to complete your narrative. Use a variety of

    asked by reeves
  116. Statistics

    Are these questions below true or false? I am stuck. I think 1 is true and 3 is false 1. In Regression Analysis if the variance of the error term is constant, we call it the Homoscedasticity property. 2. In simple linear regression analysis, if the error

    asked by Logan
  117. Math

    What is the greatest possible product of a 2-digit and a 1-digit number? Explain how you know

    asked by Jasmin
  118. ecology

    what is the atlantic pahtway? and why does its path through upstate New York raise special conservation concerns for woodlands and wetlands on the south side of Lake Ontario?

    asked by Allie
  119. geometry

    a dog toy is constructed in the shape of a cylinder with a length of 6.8 in. The cylinder has a hemisphere at each end. The diameter is 1-9 in. Find the volume.

    asked by robert
  120. annatomy

    Calculate the osmolarity of a solution that contains 0.1 M urea, 0.2 M NaCl, and 0.5 M CaCl2. Assume urea does not ionize and NaCl and CaCl2 ionize completely

    asked by russel
  121. world history

    Today i got asked to write 3 fact bullets about the 7 aspects of civilization With details from the fertile crescent dose that mean 7 bullets or no?

    asked by Alex
  122. language arts

    what it the complete ssubject in this sentence... Can you explain last night's homework to me?

    asked by Kit
  123. Algebra uno check+ help?

    So, I've got these problems: To tell which form the equation is in. 1)2x+8y=-3 I think this one is standard form. 2)y=-5x+8 I think this is slope intercept form. 3)y+4=2(x-6) I think this is also slope intecept form. Could somebody tell me if my answers

    asked by Allyson
  124. Chem

    what mass of calcium oxalate can be dissolved in 180 ml of distilled water before a precipitate forms?

    asked by Melissa
  125. language

    what part of speech is has passed

    asked by chan
  126. Chemistry

    I was just wanting to make sure I did these right. How many grams of solute are in each of the following solutions? a.) 2.5 L of 3.0 M Al(NO3)3 solution. for this one I get 1600 g of Al(NO3)3 b.) 75 ml of 0.5 M C6H12O6 solution. and for this one I get 6.8g

    asked by Carrie
  127. bio

    what is an example of a naturally fragmented habitat, and a habitat that has been fragmented by human land use?

    asked by Allie
  128. psychology

    hello I wanted to know if you could help me write my thesis statement

    asked by rhonda
  129. 9th grade

    what does the sun become after super nova

    asked by Anonymous
  130. 11th grade

    If the volume of water produced during the reaction doubled, what would happen to the ratio of hydrogen to oxygen in the following equation: 2 H2+ O2 --> 2 H2O

    asked by bernice
  131. art

    What are some key considerations when approaching shading on a realistic rendering

    asked by someone needing help
  132. English

    I really need your help to check these sentences and alternatives. Thank you very much! 1) According to Rousseau's theories,society was regarded (better: should be regarded) as the source of any kind of evil and corruptions. 2)One of the main themes is

    asked by Franco
  133. Managerial Accounting

    The Fashion Shoe Company operates a chain of women’s shoe shops around the country. The shops carry many styles of shoes that are all sold at the same price. Sales personnel in the shops are paid a substantial commission on each pair of shoes sold (in

    asked by Adrienne
  134. medical

    Quinine, which is found in tha bark of the cinchona tree is effective in A. Reducing fevers B. Reducing the sting of a burn c. Treating bacterial infections D. Reducing convulsions

    asked by Mare
  135. Managerial Accounting

    • Calculate the annual break-even point in dollar sales and in unit sales for Shop 48. • Prepare a CVP graph showing cost and revenue data for Shop 48 from zero shoes up to 17,000 pairs of shoes sold each year. Clearly indicate the break-even point on

    asked by Adrienne
  136. economics

    Briefly describe the main attributes of the following economic systems: market economy, centrally planned economy, and mixed economy.

    asked by Anita fields
  137. college

    How to do an inventory purchase budget and cash disbursements?

    asked by Raveen
  138. algebra uno help + check?

    So, I've got these other sets of problems, that are telling me to write equivilant equations for the equations given, heres what I think. 1) x+y=-10 -5+5=10 -5(2)+10 2) 5x+10y=15 5x(3)=15 5x+10=15 3)-x+2y=9 y=3(3)=9 3+6=9 Heres what I need YOU tutors to

    asked by Allyson
  139. 5th grade

    what is 9 /24794

    asked by pamela
  140. Science

    how can I go about explaining the basic process without using the word adapt?

    asked by Christopher
  141. Economics

    I need a article that talks about the competitive nature of international business. also I want to know what it means

    asked by Don
  142. Spanish

    Could you please explain the transalation and how to answer for the first and check my answer for the second. Estás en el correo. ¿Qué hora es? I think this says I'm in the mail and what hour is it-but that doesn't make sense. Please explain how I

    asked by JamieLynne
  143. science

    5. Discuss possible benefits and drawbacks of a transgenic organism such as Bt corn?

    asked by DENETTE
  144. U.S. History

    Describe the three ways the Federal Government can affect the economy.

    asked by Sanyah
  145. Math

    If the morning temperature is 24degrees and the overall temperature is 7 degrees, what is the evening temperature.

    asked by Ev
  146. Language Arts

    What is the verb and predicate noun or adjective in this sentence: Rennett is an extract made from the lining of a calf's fourth stomach. thank you!!!

    asked by Jon
  147. Algebra

    using synthetic subsititution to evaluate the polynomial functuion for the given value of x. h(x)= -8x^3+14x-35; x=4

    asked by Pedro
  148. calculus problem

    (y^2+2)^3=x^4y+e^2

    asked by spookey69
  149. English

    1.Augustus' regin was the period that came to be called the Augustan Age, and his influence continued for nearly two hundred years. I have to identify the subordinate clause 1.that came to be called

    asked by Tracy
  150. calculus problem1

    x^2+2y^2-11=0

    asked by spookey69
  151. calculus problem2

    x^2/3+y^2/3=5

    asked by spookey69
  152. Language Arts

    What is the predicate noun or predicate adjective in this sentence; The thickened mass eventually becomes cheese.

    asked by Jon
  153. AP Physics

    A cylindrical container of radius 20 cm contains water of height of 3 m. Two meters down from the water level there is a hole of 0.5 cm in radius. Find the velocity and volume flow rate of water leaving the hole. Where does it strike the ground?

    asked by Charlie
  154. Language Arts

    Ms.Sue, i think that the verb is becomes and the oredicate noun is cheese?

    asked by Jon
  155. chem

    I am having lots of trouble with these questions: Classify each of the following reactions in as many ways as possible. (Select all that apply.) a)2 Rb(s) + Br2(g) 2 RbBr(s) you can select: -acid-base -double-displacement -gas evolution

    asked by hannah
  156. Calculus

    A particle moves along the x-axis with position at time t given by x(t)=e^(-t)sin(t) for 0 is less than or equal to t which is less than or equal to 2 pi. a) Find the time t at which the particle is farthest to the left. Justify your answer I think you

    asked by Leanna
  157. Math 6th grade

    What is the answer the perimeter is 30 and the area is 3??

    asked by William
  158. Algebra one, help me please?

    Okay so, I have to write an equation in standard form, of a line that passes through the given point and has the given slope, ( M) or that passes through the given points. Heres what I think: 1)( 4,-1) M= 3 So, it's in y=3x+B and then, I would plug in -1

    asked by Allyson
  159. English

    1.It was built entirely by hand. 2.Several Chinese states began to build walls for protection. 3.The Ming government began rebuilding the crumbling ruins in the fifteenth century, and much of their work remains today. 4.The wall is as high as thirty-five

    asked by Hayley
  160. 6TH GRADE MATH

    Repost perimeter is 30 and area 36

    asked by William
  161. calculus

    Coroners estimate time of death using the rule of thumb that a body cools about 2 degrees F during the first hour after death and about 1 degree F for each additional hour. Assuming an air temperature of 70 degrees F and a living body temperature of 98.6

    asked by Anonymous
  162. economic

    Does diminishing marginal utility or indifference curve works for consumers? which of these concept works

    asked by lisa
  163. calculus

    the side of squyare,s, is increasing at a rate of k unites per second. find the rate at which the area of the square is increasing

    asked by lindy
  164. science

    how do you write the chemical equation for liquid pentanol (C5H12O) and gaseous oxygen ? Thanks ~Samantha~

    asked by Samantha
  165. health

    The information for Blocks 1-9 on the CMS-1500 can be obtained from?

    asked by julianna
  166. chemistry

    How many kilojoules of heat is required to completely covert 60.0 grams of water at 32.0° C to steam at 100°C? For water: s = 4.179 J/g °C Hfusion = 6.01 kJ/mol Hvap = 40.7 kJ/mol

    asked by Kate
  167. Calculus

    Use the given derivative to find all critical points of 'f' and at each critical point determine whether a relative maximum, relative minimum, or neither occurs. Assume that 'f' is continuous everywhere. f' (x) = (1-2x)/ ∛(x+3)

    asked by Roy
  168. chemistry

    How many kilojoules of heat is required to completely covert 60.0 grams of water at 32.0° C to steam at 100°C? For water: s = 4.179 J/g °C Hfusion = 6.01 kJ/mol Hvap = 40.7 kJ/mol

    asked by Kate
  169. economics

    Briefly describe the main attributes of the following economic systems: market economy, centrally planned economy, and mixed economy.

    asked by Anita fields
  170. chemistry

    NH4NO3(s) H2O(g) + N2(g) + O2(g) Consider the unbalanced equation above. What will be the total volume of gas produced at 720. mm Hg and 570.0°C when 2.50 g of NH4NO3 completely decomposes? Use molar masses with at least as many significant figures as the

    asked by Kate
  171. AP Calc BC

    Hi! Thank you for your help How do you find the antiderivative of 2/((x^2)+1) "two over (x squared plus one)" I think I have to do integration by partial fractions but I didn't figure it out...assistance is much appreciated Thank you very much

    asked by APpreciative student
  172. Calculus

    Find all values of x, where the graph of y = [(5x^3)-(6x)+(8)] / (x^2) crosses its oblique asymptote.

    asked by Raj
  173. Algebra help please.

    So, I carried this problem through: (0,5) M=-2 y=-2x+B 5=-2(0)+B 5=0+B 5=B y=2x+5 How do I write this in standard form? Did I do this problem right? Thanks!

    asked by Allyson
  174. 5th grade

    how to convert improper fraction into mixed number or whole numbers

    asked by jana
  175. math

    peppers are sold in packs of three or singly.single for .29c each.and three pack for $1.11 which is the best value and give reason and working out if possible

    asked by kamy
  176. math

    My couch potato friend enjoys sitting in front of the TV and grabbing handfuls of 4 chocolates at random from his snack jar. Unbeknownst to him, I have replaced one of the 18 chocolates in his jar with a cashew. (He hates cashews with a passion.) How many

    asked by LC
  177. Pre-Algebra

    30 ft pipe is broken in three pieces. The shortest piece is 6ft. shorter than the longest piece. The medium length piece is 2/3 the length of the longest

    asked by Lily
  178. geometry

    find the midpoint M of the segment with endpoints[1,10] and [-13,-6].

    asked by norah
  179. Algebra 7th Grade

    what is -8(700-3)= (using distributive property)

    asked by Robert
  180. math

    How could you use two color or coins to model 3/4x1/2?

    asked by monica
  181. Algebra 7th Grade

    what is -8(700-3)= (using distributive property)

    asked by Robert
  182. Science

    how can I go about explaining the basic process of natural selection without using the word adapt.

    asked by Christopher
  183. English

    1.The Great Wall is no longer needed for defense, but it has become a major tourist attraction. 2.Much of the wall was in ruins when the Ming dynasty took power in A.D. 1368. 3.Parts of the wall were built as long as 2,500 years, but the different sections

    asked by Hayley
  184. physics

    - A 1600-KG ELEVATOR accelerates downward at 2.00 m/s2 starting from rest. how much work does gravity do on the elevator? b) how much does tention in the elevator cable do on the elevator? c) use the work kinetic energy theorem to find the kenetic energy

    asked by Anonymous
  185. Algebra 7th Grade

    what is -8(700-3)= (using distributive property)

    asked by Robert
  186. English

    What is the adjectives in the sentence, Lake Baika is in southeast Siberia

    asked by Anonymous
  187. math

    3y=4/5

    asked by liz
  188. IPC(integrated phsyics)

    Insulating materials are rated by their _____. specific heat heat index R-value temperature resistance

    asked by lana
  189. physics

    a tennis player swings her 1000g racket with a speed of 6.00 m/s. she hits a 60g tennis ball that was approaching her at a speed of 18.0 m/s . the ball rebounds at 43.0 m/s. a)how fast is her racket moving immediately after the impact? you can ignor the

    asked by Anonymous
  190. chemistry hw help :)

    which of the following substances dissolve in each other? and why? water ethylene glycol isopropanol cycolohexane ethyl acetate

    asked by tarkan
  191. Geometry

    Can a triangle have sides with the given lengths? Explain. 15) 8cm, 7cm, 9cm 16) 7ft, 13ft, 6ft 17) 20in, 18in, 16in 18) 3m, 11m, 7m

    asked by Hannah
  192. Physics

    What is the gravitational force between the proton (1.67X10^-27 kg) and the electron (9.11X 10^-31 kg) in a hydrogen atom if they are 3.00X10^-10 m apart?

    asked by Alecia
  193. business statistics

    solv the following a)mean b)mode c)median d)standard deviation observation Frequency 5 14 10 22 15 47 20 17

    asked by Anonymous
  194. Spanish 1

    A spanish exchange student is trying to figure out what his friends like to eat. Provide the correct pronoun forms to complete his sentences below.: ____ gusta la comida china. A Patricia y a Juan ____ gusta la comida mexicana. ¿A vosotros ____ gusta la

    asked by Allie
  195. 8th grade

    Tom had scores of 78, 88, 94 and 79 on his first four science tests. What must he score on the next test to have an average of 88?

    asked by Lisa
  196. adult education

    The majority of the world’s diamonds comes from Country A and Country B. Suppose that the marginal cost of mining a diamond is $1,000 per diamond and that the demand schedule for diamonds is as follows: Price Quantity $ 6,000 5,500 5,000 6,500 4,000

    asked by mary-please show work and solve i am very confused
  197. Spanish 1

    Use the cues below to write sentences with the verb GUSTAR. MODELO: comida italiana/Vilma = A Vilma le gusta la comida italiana. 1) quien/los animales 3) quienes/la musica

    asked by Allie
  198. grade nine geography

    I need to have "Sensitvie Tourist" suggestions so that visitors can minimize their impact and local environment and community on the Mixedwood Plains. Thanks

    asked by peyton
  199. Geometry

    SORRY I FORGOT SOME QUESTI IN MY LAST POST!!! The lengths of two sides of a triangle are given. Describe the possible lenths for the third side. 19.) 5,11 20.) 12,12 21.) 25,10 22.) 6,8 25.) A student draws a triangle with a perimeter 36 cm. The students

    asked by Hannah
  200. Chemistry- Decomposition

    What is the decomposition of AgC2H3O2? AgC2H3O2->?

    asked by Marie
  201. physics

    A 45.00 kg child standing on a frozen pond throws a 0.60 kg stone to the east with a speed of 5.80 m/s. Neglecting friction between child and ice, what is the speed (in m/s) of the child after throwing the stone? I'm kind of confused about the masses..

    asked by help
  202. physics

    Review Conceptual Example 2 in preparation for this problem. In Figure 5.4, an object, after being released from its circular path, travels the distance OA in the same time it would have moved from O to P on the circle. The speed of the object on and off

    asked by megan
  203. 3rd grade

    show me a base-ten drawing

    asked by cortney
  204. Chemistry

    For the compound C13H18O2 (ibuprofen) determine the molecules of ibuprofen that contains 15 mol of hydrogen? I am missing a step and I am trying to figure it out. I tried 15 mol of H x 1 mol C13 H18 O2 divided by 1 mol of H and got 15 MOL C13 H18 O2 then

    asked by TMV
  205. Calculus - MathMate Please help

    ok, i tried to do what you told me but i cant solve it for c because they cancel each others out! the integral for the first one i got is [sin(c)cos(x)-cos(c)sin(x)+sin(x)+c] and the integral for the 2nd one i got is [-sin(c)cos(x)+cos(c)sin(x)-sin(x)+c] I

    asked by K
  206. kindergarten

    HAVE CHILD COUNT THE SEA ANIMALS AND THEN DRAW COUNTERS TO SHOW HOW MANY SEA ANIMALS

    asked by LEA
  207. Algebra 1

    In the army kitchen there are 4 pots for every 3 pans for every 21 glasses. All together there are 476 of these items. How many pans are there?

    asked by Cheryl
  208. Calculus

    Suppose that the number of bacteria in a culture at time t is given by N = 4950 ( 28 + t*e ^(-t/24)) Find the LARGEST and SMALLEST number of bacteria in the culture during the time interval 0 ≤ t ≤ 140 .

    asked by Elisa
  209. Calculus

    Suppose that the number of bacteria in a culture at time t is given by N = 4950 ( 28 + t*e ^(-t/24)) Find the LARGEST and SMALLEST number of bacteria in the culture during the time interval 0 ≤ t ≤ 140

    asked by Elisa
  210. chem

    What is the volume of 325 mL of a sample of gas at 51.0°C and 710. mm Hg if the conditions are adjusted to STP? Assume the amount of gas is held constant.

    asked by Kate
  211. chem

    What is the volume of 325 mL of a sample of gas at 51.0°C and 710. mm Hg if the conditions are adjusted to STP? Assume the amount of gas is held constant.

    asked by Kate
  212. chemistry

    if .500 mol of copper combines with .250 mol of sulfur what is the empirical formula of copper sulfide?

    asked by Pam
  213. edu

    What are the career possibilities in the education world.

    asked by luly
  214. trig

    the terminal side of an angle theta in standard position coincides with the line y=5x and lies in quadrant 3. find the six trigonometric functions of theta.

    asked by meg
  215. geography

    What does this mean? Nation-building can involve the use of propaganda or major infrastructure development to foster social harmony and economic growth.

    asked by Bethany
  216. Calculus

    Find: (a) the interval(s) on which f is increasing, (b) the interval(s) on which f is decreasing, (c) the open interval(s) on which f is concave up, (d) the open interval(s) on which f is concave down, and (e) the X-coordinate(s) of any/all inflection

    asked by Please Help
  217. geometry

    two of the angle of a arallelogram measure 75 what are the measures of the other two angle

    asked by ruby
  218. Problem Solving

    What form does Bernoulli's equation take if we use the information in the problem statement that P1=P2?

    asked by JahMan
  219. math

    perimeter=240 yd., the length is 16 yards longer than than width. what are dimensions?

    asked by toju
  220. grade 9 GEOGRAPHY

    I posted a question earlier about the sensitive tourist I am a little confused on what the question is asking exactly. "Sensitve tourist" suggestions so that visitors can minimize their impact on the local environment and community. My paper is on the

    asked by peyton
  221. PHYSICS

    1)A picture of width 40 cm weighing 40N hangs from a nail by means of flexible wire attached to the sides of the picture frame. The midpoint of the wire passes over the nail which is 3 cm higher than the points where the wire is attached to the frame. Find

    asked by Ann
  222. geometry

    the equal sides of an isosceles trapezoid eah measure 5, and its altitude measures 4. if the area of the trapezoid is 48, find the lengths of its bases.

    asked by kiiah roberts
  223. science fair ideas

    PLZ help i have a science project due in less than a week and still have no idea what im going to do dose anyone have ideas for zoology science experiments?

    asked by Courtney
  224. Grammar/English

    Please correct this sentence, the street was blocked off said Holly how did you see it Thanks!!

    asked by Erin
  225. Calculus!!!!

    A particle moves along the x-axis with position at time t given by x(t)=e^(-t)sin(t) for 0 is less than or equal to t which is less than or equal to 2 pi. a) Find the time t at which the particle is farthest to the left. Justify your answer I think you

    asked by Leanna
  226. 2nd grade

    If i have this number, 312. Which number is in the tens place and which is in the ones place?

    asked by Brendt
  227. Physics

    The speed limit on a particular freeway is 28.0 m/s (about 101 km/hour). A car that is merging onto the freeway is capable of accelerating at 6.50 m/s2. If the car is currently traveling forward at 13.0 m/s, what is the shortest amount of time it could

    asked by Mike
  228. Physics

    A 250-gram pendulum bob is initially constrained at a 53 degree angle by two strings. When the horizontal string is cut the pendulum begins to swing. As the pendulum bob passes through its equilibrium position, what will be its velocity?

    asked by Jenny
  229. chemistry

    classify in as many ways possible 2 Rb(s) + Br2(g) --> 2 RbBr(s) acid-base double-displacement gas evolution oxidation-reduction precipitation single-displacement synthesis thanks

    asked by rebekah
  230. physics

    A 910 kg sports car slows down to 6.0 m/s to read a cross street sign. The 1440 kg pick-up truck following the sports car fails to see that the sports car has slowed and continues traveling at 17.0 m/s. The pick-up slams into the sports car. With what

    asked by help
  231. economics

    explain why the marginal cost curve is equal to the supply curve for a monopoly

    asked by SYLVIA
  232. Logic

    Supply steps in a proof of a valid argument and give reasons using rules of inference. 1.)~A*B 2.)C>A 3.)CvD/D

    asked by Greg
  233. Chemistry

    8.40 grams of Hydrogen gas reacts with 48.2 grams of Oxygen gas. Give the mass of the water vapor produced and the mass of the excess reactant left over. Can somebody please explain stoichiometry to me? I've failed the test and the retest. I'm usually able

    asked by Anna
  234. History

    A more unified African American culture began to emerge in the early decades of the nineteenth century because? the Gullah dialect spread to the new slave territories in the Old Southwest. the rapid transfer of slaves from other regions into the Lower

    asked by Joel
  235. Algebra

    3/12+5/12+3/12+n=1

    asked by Skyler
  236. math 208

    y=-3x +19 y=2x=1 need to know whether the equation are independent,dependent or inconsistent

    asked by brille
  237. math

    Explain how to use cross product to detemine whether the ratios 27 to 36 and 12 to 16 are equal.

    asked by Kay
  238. spalding

    the american bankers association is an example of a? a. labor union b. public interest group c. trade association d. single interest group

    asked by kelly
  239. us history

    Some help with this questions would be great....thanks everyone. I would like to say the answer is #1. As president, John Quincy Adams supported... 1.a national bank to promote a uniform currency and to control credit. 2.a strict limit on the powers of the

    asked by Diana
  240. geometry

    express in y=mx + b form the equation of the line perpendicular to the line 5x-3y=8 and passes through the piont (-5,1)

    asked by veronica
  241. government

    which is an economic interest that is represented by most interest groups? a. business interests b. agricultural interests c. professional interests d. all of the above

    asked by kelly
  242. Problem Solving

    What are some ways to decrease cancer related deaths?

    asked by JahMan
  243. government

    common cause and the league of women voters are examples of? a. private pressure groups b. business groups c. economic groups d. public interest groups

    asked by kelly
  244. government

    a political action committees purpose is to a. use propaganda b. work for the interests of all americans c. raise enough money for political candidates d. encourage americans to join interests groups

    asked by kelly
  245. government

    a political action committees purpose is to a. use propaganda b. work for the interests of all americans c. raise enough money for political candidates d. encourage americans to join interests groups

    asked by kelly
  246. 6th grade

    if a spinner is numbered 1-10 what is the probability of it stopping on a multiple of 3?

    asked by chevy
  247. 5th grade

    Having trouble with division word problems

    asked by Antoine
  248. government

    lobbyist activities re a. illegal b. regulated by laws c. not concernd with public policy d. driven by personal, not group, goals

    asked by kelly
  249. math

    if a spinner s numbered 1-10, what is the probability of it landing on a multiple of 2?

    asked by chevy
  250. government

    a lobbyist encourages parents to write letters to their representatives in congress in support of an education bill. this is an example of a. grass roots pressure b. PAC contributions c. a public interest group d. propoganda

    asked by kelly
  251. math

    is it possible to make a triangle with side leangths 4,8, and 17?

    asked by Tahsina
  252. physics

    in deep space a gun is fired; how much force will be required to keep the bullet going?

    asked by alexis
  253. social studys

    what is two spanish artifacts?

    asked by thomas
  254. math

    156 devided by 47

    asked by Anonymous
  255. social studys

    what is two spanish artifacts?

    asked by thomas
  256. Math

    I need help with the following math problem. A sculptor has a 3lb block of clay. He ads 24 oz. of clay to the block in order to make a sculpture. What is the total weight of the clay before he begins sculpturing?

    asked by Jared
  257. algebra

    what is 5 on the square root of 2m divied by 5 on the square root of 3m cubed

    asked by lea
  258. Statistics

    using bayes theorem, what would be the probability of a honda civic being stolen 53% of civics are stolen and 46% were other honda cars

    asked by Ken
  259. arithmetic

    a recipe for rice pudding uses 1/2 cup of rice and serves 6 people. write the cups of rice per person as a unit rate . how many cups of rice do you need to serve 75 people?

    asked by jane
  260. LA

    In the book, The Giver, why was it important for the community to have someone who could "see beyond?"

    asked by Reina A.
  261. algebra

    m/-6

    asked by janice
  262. LA

    In the book, the Giver, why does Jonas refer to Gabe as his little brother?

    asked by Reina A.
  263. math

    16over5 / 5 can you explan to me

    asked by george
  264. LA

    In the Giver, why was the Giver bitter about the COuncil of Elders

    asked by Reina A.
  265. Econ

    A firm is considering locating a 100 employee microprocessor production facility in one of Aland’s cities. The products this firm will produce are expected to be exported to other places (other cities within and outside the country). City planners think

    asked by Candie
  266. Geometry-EXtended Exponents

    Use the given ratio and information in the figure to find the value of the variable(s). XY:YZ:XZ=7:10:14 XY=b-7 These are side lengths YZ=b+20 to a triangle. Side XZ=5c-24 note XZ is the hypotenus

    asked by chica
  267. geography grade nine

    Does eco tourism and sensitive tourist the same thing?

    asked by peyton
  268. physics

    An EF 151 GTA sits on the EF stool and rotates CCW with an initial speed of 60 rpm. After 28 revolutions he stops. Assuming constant acceleration, how long was he rotating?

    asked by sandhu
  269. English

    a. Paragraph one – Describe the subject that you are writing about, and say why this subject is important. b. Paragraph two – State the current situation associated with this subject(s). What is happening now in the field that triggered you to write an

    asked by jenny
  270. algebra 2

    Solve the inequality : -3(r-11)+15≥9

    asked by sara
  271. english

    This might sound stupid but I really need help. I think I know how to do it yet I am not sure if I am right or wrong so please direct me. My teacher asked me to Word format my paper, so I opened the microsoft word, then clicked on View and checked off the

    asked by Mary
  272. math

    For numbers less than 40, what are the pairs of numbers that have a GCF of 12

    asked by anonymous
  273. math

    find the values ofx and y that solve the following system of equations -3x- 8y=19 4x+9y=-22

    asked by brille
  274. math

    i need help with square roots?

    asked by lea
  275. Math

    Jen and Heather went to lunch. When the bill came, Jen discovered she had only $8. Luckily, Heather had enough money to pay the other part, 3/5, of the bill. How much did Heather pay? How much was the total bill?

    asked by Zay
  276. Chem

    what would be the partial pressure of N2 gas over water at 22*C and 721 torr pressure

    asked by kary
  277. math

    find the values of x and y that solve the following system of equations 3x+2y=-22 5x -9y=25

    asked by brille
  278. math

    A cyclist travels 70 miles in 7 hours going aganist the wind and 56 miles in 4 hours with the wind. what is the rate of the cyclist in still air and and the rate of the wind. rate in still water= rate of the wind=

    asked by brille
  279. Chemistry

    True or False: A non-spontaneous reaction is converted into a spontaneous reaction in a voltaic cell by the expense of electrical energy. I believe it is true because in a non spontaneous reaction, energy must be induced in order for it to occur. Is this

    asked by James
  280. math

    2 rainstorms occurred in one week in a certain area. In the first storm, 15ml of rain fell per hour, and the second storm, 20ml of rain fell per hour. rain lasted for a total of 40 hours, resulting in a total rainfall of 675ml. how long was each storm

    asked by brille
  281. algebra

    Solve the inequality : -3(r-11)+15≥9 a. [r|r≤13] b. [r|r≥13] C. [r|r≤-13] D. [r|r≥-13]

    asked by sara
  282. Chem 22

    1. What volume will a mixture of 5.00 mol of H2 and 0.500 mol of CO2 occupy at STP?

    asked by Ivy
  283. math

    a motorboat takes 4 hours to travel 256miles going up stream. the return trip takes 2 hrs going downstream. what is the the rate of the boat in still water and what is the rate current. rate of the boat in still water = mi/hrs rate of the current=mi/hrs.=

    asked by brille
  284. Chemistry

    Using the compound for Ibuprofen C13H18O2 find molecules of Ibuprofen that contain 2.84 x10 23 atoms of Hydrogen So for every 1 mol of H= 6.022 x 10 23 molecules of H? (Not sure if Im going in the right direction?) Having trouble setting this up or 1 mol

    asked by TMV
  285. Physics

    An elevator manufacturing company is stress-testing a new elevator in an airless test shaft. The elevator is traveling at an unknown velocity when the cable snaps. The elevator falls 2.50 meters before hitting the bottom of the shaft. The elevator was in

    asked by Thomas
  286. math

    on monday 86 science fiction books were sold at a book sale this is 8 more than twice the amount sold on thursday how many science fiction books were sold on thursday

    asked by felix
  287. Chemistry

    What is the pH when 25 mL of .20 M CH3COOH has been titrated with 35 mL of .10 M NaOH?

    asked by Louis
  288. Physics

    The speed limit on a particular freeway is 28.0 m/s (about 101 km/hour). A car that is merging onto the freeway is capable of accelerating at 6.50 m/s2. If the car is currently traveling forward at 13.0 m/s, what is the shortest amount of time it could

    asked by Thomas
  289. Chemistry 22

    1. What is the Kelvin temperature of a system in which 4.50 mol of a gas occupy 0.250 L at 4.15 atm? 2. In the lab, students generated and collected hydrogen gas according to the following equations: Zn + H2SO4---> H2 + ZnSO4 a) How many mL of hydrogen gas

    asked by Ivy
  290. geometry

    if the measure of each exterior angle is 9, what type of polygon is it?

    asked by Rose
  291. College Chem

    A diver exhales a bubble with a volume of 25 mL at a pressure of 2.4 atm and a temperature of 15 degrees C. how many gas particles are in this bubble?

    asked by Jennifer
  292. Chemistry

    Consider the following equation: 4NH3(g) + 5O2(g)----> 4NO(g)+6H2O(g) a. How many liters of oxygen are required to react with 2.5 L NH3? Both gases are at STP b. How many grams of water vapor can be produced from 25 L NH3 if both gases are at STP? c. How

    asked by Ivy
  293. Chemistry

    Consider the titration: .30 M HCl versus .30 M methlamine (CH3NH2). What is the concentration of CH3NH3+ at the equivalence point?

    asked by Amy
  294. Chemistry

    What is te component concentration ratio, [NO2-]/[HNO2], of a buffer that has a pH of 2.42 (Ka of HNO2=7.1 x 10^-4)?

    asked by Jer
  295. physics

    You own a yacht which is 14.5 meters long. It is motoring down a canal at 9.80 m/s. Its bow (the front of the boat) is just about to begin passing underneath a bridge that is 30.0 m across. How much time is required until its stern (the end of the boat) is

    asked by Thomas
  296. Chemistry

    Find the pH of a buffer that consists of .28 M NH3 and .12 M NH4Cl (pKb of NH3=4.75)

    asked by Rach
  297. math

    )SIMPLIFY i^2 square root of -80 2)SOLVE 49x^2+100=0 3)14-i^6 divided by i

    asked by kaleb
  298. Chemistry

    A buffer is prepared by mixing 205 mL of .452 M HCl and .500 L of .400 M sodium acetate. (Ka =1.80 x 10^-5) a) What is the pH? b) How many grams of KOH must be added to .500 L of the buffer to change the pH by .125 units?

    asked by Missy
  299. Calculus - Still Need Help! Anyone!

    A particle moves along the x-axis with position at time t given by x(t)=e^(-t)sin(t) for 0 is less than or equal to t which is less than or equal to 2 pi. a) Find the time t at which the particle is farthest to the left. Justify your answer I think you

    asked by Leanna
  300. math

    find the values of x and y that solve the system of equations -3 x- 8y=19 4x+9y=-22

    asked by zoe
  301. chemistry

    Find the pH of a buffer that consists of 1.6 M sodium phenolate (C6H5ONa) and 1.0M phenol (C6H5OH). (pKa of phenol=10.00)

    asked by Kate
  302. 11th grade

    A 625-kg racing car completes one lap in 14.3 s around a circular track with a radius of 50.0 m. The car moves at constant speed. (a) What is the acceleration of the car?

    asked by john
  303. math

    yhank you very much for solving the question i asked yesterday:the two parners in a business, one partner mortgaged business property to his co-partner for $15,000 at 12% interest. no payments were ever made for 17 yearsyour answer was "assuming the

    asked by martin sostre
  304. chemistry

    Write the balanced equation and solubility product expression for the solubility equillibrium of Mn3(PO4)2: Ksp expression?

    asked by Karly
  305. Chemistry

    The solubility of zinc oxalate is 7.9 x 10 ^-3 M at 18 degrees C. Calculate its Ksp.

    asked by Pink
  306. Chemistry

    The solubility of calcium sulfate at 30 degrees C is .209 g/100mL solution. calculate its Ksp.

    asked by Al
  307. chemistry

    the solubility of Ag3PO4 (in water) is 6.7 x 10^-3 g/L. what is the molar solubility>

    asked by AJ
  308. chem

    you used a pencil to mark the chromatography paper since the carbon in the "lead" pencil does not dissolve in the solute. why does carbon not dissolve? what type of pen (ink) will also not produce a chromatogram when water is used as the solovent? explain

    asked by anon
  309. alg 2

    How would I factor 2X^2-9X+9 ?

    asked by billy
  310. algebra

    use linear combinations to solve these system. 3x+2y=22 9x-8y=-4

    asked by aviel
  311. physics

    1) a force of 10 N acts on a 5.0 kg object, initially at rest, for 2.5 s. What is the final speed of the object? 2) a 1500 kh car, is allowed to coast along a level track at a speed of 8.0 m/s. It collides and couples with a 2000-kg truck , initially at

    asked by Joceylin
  312. math

    What is the distributive property?

    asked by Teacha
  313. Grammar

    For each sentence write whether the sentence is in the active or passive voice. 1.Pygmalion was written by George Bernard Shaw. Passive voice 2.Shaw's play is based on an ancient Greek myth. Active voice 3.Many people saw the play at the theater. Active

    asked by TiffanyJ
  314. science

    create a concept web to summarize the types of presevation - thnx

    asked by kayla
  315. spanish NEED HELP!!!!

    Es época de elecciones nacionales. Durante el almuerzo, los empleados opinan y discuten de política. Completa el diálogo con los verbos en el imperfecto del subjuntivo. (FILL IN THE BLANKS) WORD BANK: aprobar dedicarse defender estar hablar juzgar saber

    asked by Jay
  316. Physics

    density of ice 917 kg/m^3, density of sea water is 1025 kg/m^3, a piece of ice floating has a volume of 5.2 m^3, what is the weight of the heaviest bear the ice can support without sinking?

    asked by Omar
  317. science

    sequence the steps involved in the making of the cast of a shell 1)sdiment buries shell 2)??? 3)??? 4)mold results 5)??? 6) cast results

    asked by kayla
  318. math

    Find the standard deviation. Round to one more place than the data. 68, 34, 86, 46, 48, 39, 79, 85, 81

    asked by fatma kaya
  319. math

    if 1/4 inch represents 40miles then what is 1/2inch represent

    asked by Angelise
  320. 11th grade physics

    A car slows down from +32 m/s to +8 m/s in 4s. Calculate the acceleration .

    asked by jess
  321. AP Calculus

    Show that the equation x^3 - 15x + c = o has exactly one real root. All I know is that it has something to do with the Mean Value Theorem/Rolle's Theorem.

    asked by cel
  322. algebra 2

    solve the inequality: -2

    asked by sara
  323. Physics

    What force does work on a ball rotating down an inclined plane? Explain why the other forces the ball experiences do not do work.

    asked by Joe
  324. Math

    Is RESP a form of annuity?

    asked by Emily
  325. Physics, URGENT!!!

    We consider tobacco virus diffusing along a 0.47 m long tube filled with water. The cross-sectional area of the tube is unknown. The diffusion coefficient is found in Table 10.5, p. 319 in the textbook. A total amount of virus of 2.6 x 10-16 kg is

    asked by Sydney
  326. college

    You are on an island where a huge explosion at a distance of 915 miles away can be heard. How long (in seconds) does it take the sound to travel to your location? Assume the temperature of the air is 20 oC

    asked by Anonymous
  327. Geometry

    The three coordinate points are collinear. Use slopes to write aproportion to find the value of a. #38. (-4,1),(-1,2),(5,a) #39. (4,5),(1,2),(a,0)

    asked by chica
  328. Calculus

    Suppose that the number of bacteria in a culture at time t is given by N = 4950 ( 28 + t*e ^(-t/24)) Find the LARGEST and SMALLEST number of bacteria in the culture during the time interval 0 ≤ t ≤ 140

    asked by Elisa
  329. Calculus

    Find: (a) the interval(s) on which f is increasing, (b) the interval(s) on which f is decreasing, (c) the open interval(s) on which f is concave up, (d) the open interval(s) on which f is concave down, and (e) the X-coordinate(s) of any/all inflection

    asked by Dan
  330. physics

    player kicks football from ground level with velocity of32 m/s at an angle of 40 degrees above horizontal. What is hang time of football? How far does the ball travel horizontally before hitting the ground? What is the maximum height that the ball reaches?

    asked by chelsie
  331. Grammar

    11. Costumes were created by the cast members. Passive voice

    asked by TiffanyJ
  332. Math

    Add parentheses to 9+8*7-6*5+4*3+2 so that the value of the expression is 105

    asked by Stephen
  333. algebra 2

    solve the inequality: 3|m-4|>6 A. [m|2

    asked by sara
  334. science

    What are the rules for number of sig figs in the answer when multiplying/dividing? when adding /subtracting?

    asked by anonymous
  335. unit conversion

    what is .07g/cm3 in kg/m3?

    asked by Sydney
  336. physics

    An EF 151 GTA sits on the EF stool and rotates CCW with an initial speed of 60 rpm. After 28 revolutions he stops. Assuming constant acceleration, how long was he rotating?

    asked by sandhu
  337. Pre-algebra

    Lydia wrote 4.5 pages on her science report in 1 hr.What was her writing rate in pages per minute?

    asked by Bianca
  338. Math

    for what values of _ is 2,3_1 divisible by 9? by 3?

    asked by Jake
  339. english

    a praragraph using a adverb and adjective

    asked by Anonymous
  340. Geometry

    Rectangles The ratio of the length to the width of one rectangle is proportional to the ratio of the length to the width of a smaller rectangle. Describe the circumstances for which this proportion involves a geometric mean.

    asked by chica
  341. english

    credit card paragraph using five adverbs and five adjectives

    asked by charla
  342. Chemistry

    Is benzil soluble in NaOH? Looking at the structure of benzil it appears that it is.

    asked by Amphee
  343. physics

    A stone with a weight of 5.38 N is launched vertically from ground level with an initial speed of 25.0 m/s, and the air drag on it is 0.269 N throughout the flight. What are (a) the maximum height reached by the stone and (b) its speed just before it hits

    asked by kate
  344. physics

    A single conservative force F = (7.0x - 11)i N, where x is in meters, acts on a particle moving along an x axis. The potential energy U associated with this force is assigned a value of 29 J at x = 0. (a) What is the maximum positive potential energy? At

    asked by kate
  345. english

    Fred has gone(t) to l(p)ondon with ^ last week.) plz help me

    asked by rahila
  346. Chemistry

    what are 1 or 2 causes of loss of product that you may observe when synthesising a coordination compound

    asked by andrea
  347. Chemistry

    how could you improve the product yeild if you had to redo the synthesis

    asked by andrea
  348. Physics

    A cooling fan is turned off when it is running at 920 rev/min. It turns 1100 revolutions before it comes to a stop. What was the fan's angular acceleration? How long did it take the fan to come to a complete stop?

    asked by Angel
  349. tefl

    – How, what and when would you correct mistakes/errors made during the following stages: engage stage study stage activate stage

    asked by rahila
  350. Social Studies

    What four actions did the Congress take as it began to govern the colonies?

    asked by Carley
  351. Social Studies

    What did Patriots do when they learned that British troops intended to invade New York?

    asked by Carley
  352. math urgent!

    find the values of x and y that solve te following system of equations 3x+2y=-22 5x-9y=25

    asked by kathy
  353. 8th grade math

    Julianne plans to take advantage of the after Thanksgiving sale to purchase the portable DVD player she wants. She finds it on sale at two different stores at the local mall. J-Mart advertises the DVD player for $48.00, while Better Buy has the same model

    asked by Anonymous
  354. sustainability (wes jackson)

    I need help understanding this article from wes jackson "toward an ignorance based worldview". I understand he does not speak of knowledge as in getting an education of a university, but i cannot understand his point. could anyone please help me.

    asked by gaby
  355. physics

    a 2500 kg car accelerates from rest under the act of two forces. 1.) a forward force of 1400 N between the wheels and the road. 2.) 1140 resistive force due to various frictional forces. Use the work-kinetic theorem to determine how far the car must travel

    asked by mikaela
  356. Chemistry

    what are 1 or 2 causes of loss of product that you may observe when synthesising a coordination compound sorry more detail we were synthesising Copper sulfate pentahydrate CuSO4.5H2O And Potassium oxylate dihydrate K2C2O4.H2O

    asked by andrea
  357. physics

    How high must a 2.0-kg basketball be thrown so that the top of its arc, it has a potential energy of 160 J?

    asked by royce calvin
  358. physics

    A 200-kg crate is moved across a frictionless floor by applying a net force of 70 N for 5 seconds. This results in a final speed of 3 m/s after the crate moves a distance of 5m. What is the final kinetic energy of the crate?

    asked by royce calvin
  359. Bio Chem

    What would the freezing point of water be if one prepared a 10 m solution of urea in water? (ÄTfp = 1.86°C/m x m)?

    asked by Anonymous
  360. english

    When a student has chosen to continue their education, they have also started towards being financially secure in life. has chosen is part tense participle Is "have also started" present perfect tense?

    asked by Heidi
  361. algebra

    If I receive $6570 from the sale of my car and the sales person got a 10% commission, how much did my car sell for.

    asked by margie
  362. math urgent

    A cyclist travels 70 miles in 7 hours going against the wind and 56 miles in 4 hours with the wind. what is the rate of the cyclist in still air and the rate of the wind. rate in stir air = rate of the wind=

    asked by kathy
  363. Frequency - Physics

    An organ pipe that is closed at one end has a fundamental frequency of 128 Hz. There is a leak in the church roof, and some water gets into the bottom of the pipe, as shown in the Figure. The organist then finds that this organ pipe has a frequency of 217

    asked by Rachel
  364. More Frequency - Physics

    A guitar player plucks two strings simultaneously. One string is tuned to a (fundamental) frequency of 381 Hz. It is found that beats are audible, with a beat frequency of 5.54 Hz. What are possible values for the frequency of the other string? (Answer the

    asked by Rachel
  365. math urgent

    2 rainstorms occurred in one week in a certain area in the first storm, 15ml of rain fell per hour, and in the second storm, 20ml of rain fell per hour. rain lasted for a total of 40 hours, resulting in a total rain of 675ml. how long was each storm. 1st

    asked by leeann
  366. Algebra

    The value V, in dollars, of a shopkeeper’s inventory software program is given by V=-50t+300, where t is the number of years since the shopkeeper first bought the program. Find the value of the software after 4 years.

    asked by Mary
  367. math urgent

    a motorboat takes 4 hrs to travel 256 miles going upstream. the return trip takes 2 hours going down stream. what is the rate of the boat in still water and what is the rate current. rate of the boat in still water=mi/hr rate of the current=mi/hr

    asked by mandy
  368. Chemistry

    What volume (in liters) is occupied by 0.01 moles of carbon monoxide, CO, at 9 degrees celsius and 0.973 atm?

    asked by Kewanka
  369. english

    Fred has gone(t) to l(p)ondon with ^ last week.)

    asked by rahila
  370. math

    draw an rectangle that has an area of 12sq.in and a perimeter that is greater than 25in.?

    asked by justin
  371. math

    Help! Urgemt Constant term of (x-(2/x^2))^9 is?? I expanded it and ended up with (1)^9 and (-2)^9. Im stuck as to wat to do from here. should i add? or... what??

    asked by Marie
  372. math

    A person’s blood glucose level and diabetesare closely related. Let x be a random variable measured in milligrams of glucose per deciliter (1/10 of a liter) of blood. After a 12-hour fast, the random variable x will have a distribution that is

    asked by Kris
  373. Math

    According to CTIA-The Wireless Association, the mean monthly cell phone bill in 2004 was $50.64. A market researcher believes that the mean monthly cell phone bill is different today, but is not sure whether bills have declined because of technological

    asked by Kris
  374. PHYSICS

    What is the angular momentum of a 2.7 kg uniform cylindrical grinding wheel of radius 12 cm when rotating at 1600 rpm? How much torque is required to stop it in 4.4 s?

    asked by Malin
  375. Accounting

    For each of the journal entries, prepare an explanation of the business event that is being represented

    asked by Carol Masters
  376. PHYSICS

    Find the force on a proton, with kinetic energy 10keV, that is moving perpendicular to a magnetic field of magnitude 2.0kG. I know I need to find the velocity, and then use F=qvBsinTHETA, but I'm so bad at equating different parts of formulas. Can anyone

    asked by Trace
  377. Physics

    how many sig figs do you use for estimated absolute uncertainties?

    asked by Emily
  378. Physics

    A 250-gram pendulum bob is initially constrained at a 53 degree angle by two strings. When the horizontal string is cut the pendulum begins to swing. As the pendulum bob passes through its equilibrium position, what will be its velocity?

    asked by Jenny
  379. Chemistry

    Consider the reaction, CH4(g) + 2 O2(g) => CO2(g) + 2 H2O(g). How many grams of H2O(g) will be made by the reaction of 17 moles of CH4(g) with 7 moles of O2(g)?

    asked by Alle
  380. Chemistry

    Calculate the final temperature when 20.0 g at 60 *C iron is put into 50.0 ml of 20 *C water. The specific heat of iron is 0.449 J/g*C and that of water is 4.184*C. (Assume no heat is lost to the container or the surrounndings.)

    asked by Stacy
  381. Chemistry

    In a calibration of a calorimeter, 50.0 g of water at 60.0 *C is added to 50.0 g of water at 20.0 *C to give a mixture at 39.0 *C. What is the heat capacity of the calorimeter used in this experiment? If the calorimeter has a mass of 5.4g, what is its

    asked by Stacy
  382. algebra

    determaine if the two lines are parrallel , perpendicuar, or neither. line a: y = 4x line b: x + 4y = 2

    asked by sammi
  383. PHYSICS

    A beam of electrons is moving in a horizontal circle in a uniform magnetic field that is directed downward. The speed of the electrons is 1.0*10^7 m/s and the magnitude of themagnetic field is 1.0*10^-3 T. As seen from above, are the electrons moving

    asked by Trace
  384. math

    How do you find the unit rate for this? The managerof Quality Dairy stores says it takes 1000 pounds of milk to make 100 pounds of cheddar cheese. Find a unit rate relating pounds of milk (m) to pounds of cheese (c). 1000 pounds of milk per 100 pounds of

    asked by Zoe