Questions Asked on
April 11, 2014

  1. Chemistry

    Sodium sulfate is slowly added to a solution containing 0.0500 M Ca2 (aq) and 0.0290 M Ag (aq). What will be the concentration of Ca2 (aq) when Ag2SO4(s) begins to precipitate?

    asked by Neeta
  2. physics

    A 0.527 kg metal cylinder is placed inside the top of a plastic tube, the lower end of which is sealed off by an adjustable plunger, and comes to rest some distance above the plunger. The plastic tube has an inner radius of 7.07 mm, and is frictionless.

    asked by Paige
  3. Chemistry

    1. 3 Sn2+ (aq) + 2 Al(s) --> 2 Al3+ (aq) + 3 Sn(s). What is the voltage for this cell? 2. What is the voltage for the cell in question 1 if the Sn2+ (aq) is [.15] and Al3+ (aq) is [1.80]? 3. Using proper line notation, describe the cell described in

    asked by Bryce
  4. Math

    Hello I was wondering if you can help me with some math. I cant figure this problem and when my friend helped me they came up with a different answer. The question is find the surface area of the cylinder. The radius is 8 and the height is 8. Use 3.14 for

    asked by Sebby-Chan
  5. math

    Why 0!=1 Plz help me to prove this statement.

    asked by Muhammad
  6. Math

    Some fleet car license plates contain 4 numbers followed by 3 letters and then another 3 numbers. If this were the standard fleet car license plate and there are no other constraints, the number of plates that could be manufactured is

    asked by Jessica
  7. math

    The Standard blend of coffee uses 4 oz arabica beans and 12 oz of robusta beans per package; the Deluxe blend uses 10 oz of arabica beans and 6 oz of robusta beans per package. The merchant has 80 lbs. of arabica beans and 90 lbs. of robusta beans

    asked by anonymous
  8. math

    All of the 5th grade teachers and students from Almond went on a field trip to an archaeology museum. Tickets were $8.50 each for teachers and $2.00 each for students, and the group paid $29.00 in total. A few weeks later, the same group visited a natural

    asked by Anonymous
  9. Calculus

    Use the alternate definition, lim x->a f(x)-f(a)/x-a, to determine the instantaneous rate of change of f(x)= 1/x at the point (1,1/5) a)1/5 b)-1/5 c)1/25 d)-1/25

    asked by Sarah
  10. science

    what is the momentum of a 20.0 kg scooter traveling at 5.00 m/s?

    asked by steve
  11. math

    john counts backward from 140by twenties and lee counts backward from 120 by tens.how many of the same numbers do they say down to zero? can only body show me how to work out please,thankss

    asked by wan
  12. Calculus

    When one-sided limits are not equal to each other at a point, what can be said about the continuity of the function at that point? I know that when one-sided are not equal to each other then the limit does not exist at that point. but i do not know what

    asked by Sarah
  13. math

    Solve 3a=2b+1 3b=5a-d

    asked by Elimination method
  14. isd muscat

    after two hours 1/16th of the radioactive isotope remains undecayed.half life of the isotope is

    asked by saritha
  15. MATHS - HCF

    Find the least number when divide by 25, 45, 60 leaves reminder 20. 2) Find the least number which when divided by 18, 12, 24 leaves a reminder of 16, 10, 22 respectively. Can U help me to find the answer.

    asked by RIYA
  16. Ap Chem

    Fe(s) + Cu2+(aq) Fe2+(aq) + Cu(s) If Ecell = 0.780 V and [Fe2+] = 1.0 M, what is [Cu2+]?

    asked by Anonymous
  17. English grammar

    Who can give me a good explanation with examples for the following conjunction. a) while b) unless

    asked by rose
  18. math

    IF I RAN 3/8 OF A MILE HOW MUCH FURTHER WOULD I HAVE TO RUN TO MAKE A MILE

    asked by karen
  19. public speaking

    when speaking about abstract concepts, make them concrete ti the audience by?

    asked by john
  20. prealgebra

    Check whether (-1, 5) is a solution of the system of equations. y = -2x + 3 y = x - 4 I said no because one comes up a positive 5 and the other a negative five. Am I correct

    asked by berta
  21. pre algebra

    Check whether (-4, -12) is a solution of the system of equations. y = 6x + 12 2x - y = 4 When the graphs of two equations are parallel, there are infinitely many solutions. y = x + 4 y = 3x solution: ( , )

    asked by berta
  22. domestic violence

    why might it be necessary to remove a possible suspect right away from the scene and hold them involuntarily for evaluation at a mental health facility?

    asked by john
  23. College Algebra

    An event in the Summer Olympics is 10-meter springboard diving. In this event, the height s, in meters, of a diver above the water t seconds after jumping is given by s(t) = –4.9t2 + 7.1t + 10. What is the maximum height that the diver will be above the

    asked by Kelly
  24. College alg.

    f(x) = −x2 − 4x − 2 Graph the function. State the Domain and Range

    asked by KMILL
  25. ALGEBRA

    y = −x^2 + 8 Axis of symmetry?

    asked by KMILL
  26. Uos

    Two horizontal forces, and , are acting on a box, but only is shown in the drawing. can point either to the right or to the left. The box moves only along the x axis. There is no friction between the box and the surface. Suppose that = +2.6 N and the mass

    asked by Mariam
  27. Social Studies

    What important resource do qanats move? -Solar Power -Oil -Water -Natural gas

    asked by Red
  28. Social Studies

    Which city is most likely to be a major population center? -Yazard, in the desert of central Iran -Kars, located in mountainous eastern Turkey -Mashad, in a valley in northeastern Iran -Galata, in the cool mountain highlands of Cyprus

    asked by Serenity
  29. Physics

    Two forces FA and FB are applied to an object whose mass is 9.53 kg. The larger force is FA. When both forces point due east, the object's acceleration has a magnitude of 1.43 m/s2. However, when FA points due east and FB points due west, the acceleration

    asked by Mariam
  30. Hanus

    points Q (10,8) and R (24,10) are the endpoints of a diameter of a circle centered at P. Line l is tangent to the circle at S (12,14). What is the y-intercept of line l?

    asked by Christina
  31. chemistry

    Given that 4 NH3 + 5 O2 4 NO + 6 H2O, if 3.00 mol NH3 were made to react with excess of oxygen gas, the amount of H2O formed would be?

    asked by Anonymous
  32. health

    What is the Affordable Care Act? A. A program that allows people who are at higher risk for chronic diseases to gain free memberships to gyms and fitness facilities. B. A program that allows people who are at lower risk for chronic diseases to gain free

    asked by anthony
  33. math

    Number of apartments rented The manager of an 80 unit apartment complex knows from experience that at a rent of £¤300 per unit, all the units will be full.On thw average, an additional unit will remain wacant for each £¤20 increase in rent over

    asked by john
  34. astronomy

    Before Dark Energy could be discovered, several preconditions needed to be in place. Tick all the factors below which were necessary for the discovery of dark energy. 1. Large format detectors for wide field imaging 2. Radio interferometers 3. Large

    asked by keitanako
  35. programming

    create a c++ code that will set first the number of the student to be entered then get the name and their grades, After that display the name, grades & remarks of the student using arrays

    asked by fede
  36. astronomy

    Imagine that you live in a distant galaxy far far away. This galaxy is in a different universe, and so may have different cosmology. It seems that in this distant universe, all galaxies have the same luminosity, which you have worked out is 7.0*10^30 W.

    asked by keitanako
  37. statistics

    A large number of applicants for admission to graduate study in business are given an aptitude test with a resulting mean score of 460 with a standard deviation of 80. The top 2.5 percent of the applicants would have a score of at what? A. 606 B. 617 C.

    asked by Jill
  38. health

    Signs of a sleep disorder include? A. Trouble staying awake during the day B. Pauses in breathing during sleep C. Both A and B D. Coughing and sneezing

    asked by anthony
  39. health

    A person should not drink at all if he or she is: A. 21 and over B. Jobless C. Breastfeeding D. None of the above I got D

    asked by anthony
  40. statistics

    Times for a surgical procedure are normally distributed. There are two methods. Method A has a mean of 28 Minutes and a standard deviation of 4 minutes, while B has a mean of 32 minutes and a standard deviation of 2 minutes. a)which procedure is preferred

    asked by Rontheman
  41. trig

    Given angle x, where 0

    asked by John
  42. Statistics

    The Amount of filling a half-liter (500ml)soft drink bottle is normally distributed. The process has a standard deviation of 5ml. The mean is adjustable. A. Where should the mean be set to ensure a 95% probability that a half-liter bottle will not be under

    asked by KT
  43. trig

    Given angle x, where 0

    asked by John
  44. trig

    Given angle x,where 0

    asked by John
  45. Stats Class

    Passengers using New York's MetroCard system must swipe the card at a rate between 10 and 40 inches per second, or else the card must be re-swiped through the card reader. Research shows that actual swipe rate by subway riders are uniformly distributed

    asked by Amanda
  46. Statistics

    The Weight of a small Starbucks coffee is normally distributed random variable with a mean of 360 grams and a standard deviation of 9 grams. Find the weight that corresponds to each event. a. highest 10% b. highest 50% c. highest 5% D. highest 80% e.

    asked by Kelly
  47. trig

    Given angle x, where 0

    asked by John
  48. algebra

    Estimate the real zeros of the function to the nearest tenth f(x) = 2x^2 − 3x − 7

    asked by K.M
  49. Stats.

    Find the standard normal area for each of the following, showing your reasoning clearly. a. P(1.22

    asked by Kelly
  50. Statistics

    Daily output of Marathon's Grayville, LA, Refinery is normally Distributed with a mean of 232,000 barrels of crude oil per day with a standard deviation of 7,000 barrels. a. what is the probability of producing at least 232,000 barrels? b. between 232,000

    asked by Lindsay
  51. Physics

    A space probe is traveling in outer space with a momentum that has a magnitude of 7.84 x 107 kg·m/s. A retrorocket is fired to slow down the probe. It applies a force to the probe that has a magnitude of 1.29 x 106 N and a direction opposite to the

    asked by Anonymous
  52. Quick Question

    I am trying to find an online radio podcast that middle school students can use to host their own radio show. Can you help me research some?

    asked by Max
  53. chemistry

    2NH4NO3 --> 2N2 + O2 + 4H2O What mass of H2O can be formed from the decomposition of 12.0 g of NH4NO3?

    asked by aubrieana
  54. chemistry

    2NH4NO3 --> 2N2 + O2 + 4H2O What mass of H2O can be formed from the decomposition of 12.0 g of NH4NO3?

    asked by aubrieana
  55. algebra

    What is the length of the line segment shown below? If necessary, round your answer to the nearest hundredth. (3,0) and (0,-6)

    asked by need help apex!!!!!!!!
  56. English

    Please check if my answer is correct... Identify the INCORRECTLY punctuated sentence. In softball, pitchers throw the ball underhand; in baseball, the ball is thrown overhand. • Ice hockey is played on a rink; but field hockey is played outdoors. •

    asked by Sandra
  57. graphing

    (0,-2)is the vertex- what is the domain and range??? State the domain and range of the function. (Enter your answers using interval notation.)

    asked by K
  58. Math

    a flower was 1.6 meters high one week ago in 7 days it grew 11 centimeters find the current height of the flower 12.3 m, 1.71 m, 125 cm or 11.2 cm , i did times tables and got 17.6 and then i tried deviding but got a weird long number that wasn't on the

    asked by Naomi
  59. personal finance

    If you believe that a firm will grow rapidly in the future, you should buy its? a. common stock b. notes c.preferred stock d. notes

    asked by tammy
  60. Physics

    A wheel with a weight of 395N comes off a moving truck and rolls without slipping along a highway. At the bottom of a hill it is rotating at an angular velocity of 23.0rad/s . The radius of the wheel is 0.607m and its moment of inertia about its rotation

    asked by l
  61. math

    A stone is dropped from a cliff 344 feet high. after how many seconds will it be 200 feet above the ground?

    asked by luis
  62. math

    Solve 40e^(0.6x) - 3=237

    asked by james
  63. Science

    Problem: What are parts of a cell and how are animal cells different from plant cells? Hypothesis: Can someone help me get a hypothesis?

    asked by Anonymous
  64. algebra

    Solve: 7 ^(x+3) =519

    asked by james
  65. Math HELP

    a flower was 1.6 meters high one week ago in 7 days it grew 11 centimeters find the current height of the flower 12.3 m, 1.71 m, 125 cm or 11.2 cm , i did times tables and got 17.6 and then i tried deviding but got a weird long number that wasn't on the

    asked by Naomi
  66. algebra

    Solve: log x + log(x+15)=2

    asked by james
  67. algebra

    write in expanded logarithmic form: ln (x y^3 z^7)

    asked by james
  68. Physics

    Standing at the edge of a cliff 240 m tall. You throw a ball into the air one directly upward at 5 m/a and another downward at -5 m/s. Use conservation energy to show that they will have the same speed at the bottom. I know I have to do it twice.. And it

    asked by Michelle
  69. math

    Mr.Smith's tax on his house for 1965 was $283.79.If the tax rate for that year was $3.835 per $100 of assessed valuation, for what amount was Mr.Smith's house assessed? a. $10.88 b. $74 c. $740 d. $1088.33 e. $7400 please answer and explain

    asked by thomas
  70. Physics

    A cannon launches a ball with the initial speed of 210 m/s at a 70 degree angle. 1. How high will the cannonball go? 2. If the cannonball has a mass of 25kg how much work does it take to launch the cannonball to that height?

    asked by Michelle
  71. Social Studies

    Who determines the candidates in Iran's elections?

    asked by Kelley
  72. algebra

    Evaluate: log base 5 379

    asked by Tim
  73. algebra

    solve the following: 300e^.06x = 1500

    asked by Tim
  74. Elementary Statistics

    There are 100 questions from an SAT test, and they are all multiple choice with possible answers of a,b,c,d,e. For each question, only one answer is correct, find the standard deviation for the numbers of correct answers for those who make random guesses

    asked by Confused
  75. algebra Word problem

    what interest rate is required for an investment subject to continuous compounding to triple in 15 years? A= Pe^rt ?

    asked by Kira
  76. algebra

    solve: log base of 7 (3x+2)=5

    asked by Seth
  77. algebra

    Solve the following: 3ln(4x)=17

    asked by Seth
  78. orgo chem

    how much acid will remain after 3 extractions with 1.0 mL of ether of 50mg butanoic acid, 5mL water?

    asked by Gina
  79. algebra

    I need some help with ln 's I am trying to solve : ln(x+3)- ln(x-5)= ln7 do I: ln (x+3)/(x-5)= ln 7 ?

    asked by zach
  80. algebra

    {distinct letters in the word food}

    asked by charles
  81. logarithim

    my problem is as follows: Solve: 3^x-2=9^x+4 do I "log" both sides or "ln" both nor either?

    asked by Joshua L.
  82. Physics Energy

    How would a $10.00 compact fluorescent light bulb (15 W) be an overall money saver compared to an incandescent light bulb (60 W) that costs $0.50?

    asked by Liz
  83. math

    Gopal spent three fifths of his money in the first week and one third of the remainder in the secondweek.He spent $110 altogether.How much money did he have left?

    asked by sally
  84. Finance

    Joe and Sue invested $1500 at Bank America in 2000, at 4% compounded quarterly. In the year 2005 they moved to another city and took the total money from their first investment added $500 and invested it at Bank Bravo, at 5% compounded quarterly. a. What

    asked by Mai
  85. IB English

    IT IS END OF THIRD QUARTER AND MY IB ENGLISH GRADE IS A B!!!! MY GOAL WAS TO GET AN A BUT...... ****IF GET AN A ON THE FOURTH QUARTER, WILL MY GPA GO UP!!! I GOT A'S ON ALL OF THE OTHER CLASSES EXCEPT IB ENGLISH......... ***********SO WOULD MY GPA BUMP

    asked by Anonymous
  86. Science help!?

    . If a kestrel eats a mouse that eats grass, the kestrel is a (1 point)producer. second-level consumer. first-level consumer. decomposer. 2. Which of the following best explains why a species of lizard is able to live in the desert but not in tundra

    asked by Anonymous
  87. Contrasting East & West

    1. In 1938, British Prime Minister Chamberlain declared a final act of appeasement A. after Hitler attacked Poland. B. when Hitler's claim on the Sudetenland was accepted. C. immediately following the Nazi occupation of Austria. D. after Hitler's forces

    asked by Rebecca
  88. World History

    1. In 1964, a loose union of Palestine refugees led to the formation of the Palestine Liberation Organization (PLO) under Yasir Arafat. What was the aim of the PLO? A. Driving Israel from East Jerusalem B. Establishing a Pan-Arab League C. Evicting Israel

    asked by Rebecca
  89. World Civilization

    1. In 1789, the National Assembly revoked the privileges of the aristocracy. This occurred in reaction to A. a peasant uprising. B. Louis XVI's withdrawal of troops from Paris. C. discontent among the poor people of Paris. D. the storming of the Bastille

    asked by Rebecca
  90. Physics

    A uniform bar length of 2.0m and weight 1000 N has its center of gravity at its center. The bar is pivoted 0.5m from the right, and supports a weight of 200N on the opposite end (left end). What is the weight needed at right end of the bar to balance the

    asked by Erin
  91. finance

    Four years ago, Robert's annual salary was $52,500. Today, he earns $73,800. What has been the average annual rate of growth of Robert's salary?

    asked by gillianp
  92. finance

    You just won the Publisher's Clearing House Sweepstakes and the right to 20 after-tax ordinary annuity cash flows of $163,291.18. Assuming a discount rate of 7.50%, what is the present value of your lottery winnings? Use a calculator to determine your

    asked by gillianp
  93. Statistics

    An accelerated life test on a large number of type-D alkaline batteries revealed that the mean life for a particular use before they failed is 19.0 hours. The distribution of the lives approximated a normal distribution. The standard deviation of the

    asked by Ryan
  94. Am. History

    As there was after World War II, there is a legitimate threat to Americans and the American way of life in the Post 9/11 world. Senator McCarthy used his influence to weed out suspected Communists from the American government. Are there any lessons to be

    asked by Lib
  95. Math

    The cost of renting a car is a flat $25, plus an additional 9 cents per mile that you drive. How far can you drive for $71?

    asked by Darien
  96. math

    How many different integers, n, are there such that the difference between 2 x n squared and 7 is less than 1? The supposed answer is 6 but i have NO idea how that's possible??

    asked by ollie
  97. Food and Nutrition

    Children's Parties The stage 'children (ages 4-12 years) Relationship between nutritional needs and: - physical challenges -emotional challenges -social challenges THESE RELATIONSHIPS REGARDING CHILDREN AT PARTIES AND FOOD.... i just need some points..

    asked by Lisa
  98. Statistics

    A cola-dispensing machine is set to dispense a mean of 2.024 liters into a container labeled 2 liters. Actual quantities dispensed vary and the amounts are normally distributed with a standard deviation of 0.040 liters. What is the probability a container

    asked by Student5
  99. Math

    how many 5's are in 6

    asked by Anonymous
  100. chemistry help~Please!!!

    What are the Ka and/or Kb value for 1M ZnCl2 Show work please!!!

    asked by Eric
  101. Chem

    422g of ethyne and 190g of acetic acid find balanced equations and enthalpy calculations showing all steps

    asked by Julie
  102. algebra

    4(x-6)-7x

    asked by Anonymous
  103. Algebra

    How do you simplify this? -16^(1/4) Someone showed me like this: (-1)(16^(1/4))=(-1)(2)=-2 But others said ... -16^(1/2)= 4i 4i^(1/2) or the sqrt of 4i=sqrt of 4 times sqrt of i Final answer: 2 times sqrt of i What is the correct answer and what exactly do

    asked by Anonymous
  104. physics

    An object-–spring system undergoes simple harmonic motion. If the mass of the object is doubled, what will happen to the period of the motion?

    asked by Paige
  105. physics

    A block is attached to a horizontal spring and set in simple harmonic motion, as shown in the figure. At what point in the motion is the speed of the block at its maximum? The position of the block when the spring is relaxed is marked by x = 0, and the

    asked by Paige
  106. chemistry

    Calculate the standard cell potential for each of the electrochemical cells? 2Ag+(aq)+Pb(s)→2Ag(s)+Pb2+(aq) E∘cell......V? 2ClO2(g)+2I−(aq)→2ClO−2(aq)+I2(s) E∘cell......V? O2(g)+4H+(aq)+2Zn(s)→2H2O(l)+2Zn2+(aq) E∘cell......V?

    asked by John
  107. Chemistry

    Calculate ΔG∘rxn and E∘cell for a redox reaction with n = 1 that has an equilibrium constant of K = 28? What would be the answer to this fine question. How would you do something like this? Thanks :) ΔG∘rxn = ......kj E∘cell = ......V

    asked by John
  108. chemistry

    You need to determine the concentration of a sulfuric acid solution by titration with a standard sodium hydroxide solution. You have a 0.1896 M standard solution. You take a 25.00 mL sample of the original acid solution and dilute it to 250.0 mL. You then

    asked by Steven
  109. biology

    Red is dominate over blue, give the genotype for an individual who is heterozygous red, homozygous red, and blue.

    asked by HELP!!!!
  110. chemistry

    If a 1.60 M sample of A is heated to 500 K, what is the concentration of B at equilibrium? A(aq) 2B(aq) Kc=9.63x10^-6

    asked by Anna
  111. Algebra - functions

    Given the function: f(x) = 5/(x-1)^2 Find the Horizontal Asymptote: Vertical Asymptote: Hole(s): X intercept: Y intercept:

    asked by Kendrick
  112. English

    1. You have to study hard to get into university. 2. You have to study hard to go into university. 3. You have to study hard to enter university. 4. You have to study hard to enter the university. (Are the four sentences all grammatical and the same?)

    asked by rfvv
  113. English

    1. Each of us has something to do. 2. We each have something to do. ---------- Do we have to us 'have' in Sentence 2? How come? 3. Do you like the game? - Yes, I like it. ------------- Is 'it' a personal pronoun or a demonstrative pronoun?

    asked by rfvv
  114. College Physics

    A uniform stationary ladder of length= 5.1 m and mass= 15 kg leans against a smooth vertical wall, while its bottom legs rest on a rough horizontal floor. The coefficient of static friction between floor and ladder is μ = 0.41. The ladder makes an angle

    asked by Michelle
  115. English

    1. I feel comfortable in myself. 2. I talked out loud of myself. 3. There is a gap between myself. ------------- Are the sentences all grammatical? If not, would you correct each sentence? Thank you.

    asked by rfvv
  116. English

    1. The girl dressed herself up for the audition? 2. The girl dressed herself for the audition? ------------- What is the difference between the two sentences? Does 'up' mean 'completely' in Sentence 1?

    asked by rfvv
  117. Algebra

    The time required for a trip 108 miles downstream on a steamer is 3 hours less than the time required for the upstream trip. A boat whose rate is 6 miles per hour less than that of the steamer required 9 hours more for the upstream trip than for the

    asked by Summer
  118. Algebra Word Problem

    A number of men subscribed a certain amount to make up a deficit of $100 but 5 men failed to pay and thus increased the share of the others by $1 each. Find the amount that each man paid.

    asked by Summer
  119. Language Arts

    " What details support the idea that scientists and everyday citizens have different responses to the rediscovery of the ivory-bills?

    asked by BMTH!!! Babe 1234
  120. English

    1. You should do it yourself. 2. You should do it itself. Are both grammatical? ----------------- 3. She must be angry because she's not saying anything. 4. She has to be angry because she's not saying anything. Are both grammatical and commonly used?

    asked by rfvv
  121. Cultural Anthropology

    Contrast the four types of subsistence strategies, be sure to include differences in lifestyle, kinship, property, ownership, distribution of resources and division of labor. Thank you!

    asked by Eric
  122. Statistics

    Information from the American Institute of Insurance indicates the mean amount of life insurance per household in the United States is $120,000. This distribution follows the normal distribution with a standard deviation of $38,000. (A) If we select a

    asked by Student5
  123. Cultural Anthropology

    how are traditional anthropological fieldwork techniques used in applied anthropology? How does applied anthropology benefit modern social problems? Thank you!

    asked by Eric
  124. algebra

    I am to solve ln(x+3)-ln(x-5)=ln7

    asked by joanie
  125. Corporate Finance

    Bond price: Briar Corp is issuing a 10-year bond with a coupon rate of 7 percent. The interest rate for similar bonds is currently 9 percent. Assuming annual payments, what is the present value of the bond? (Round to the nearest dollar.) $990 $872 $1,066

    asked by Judy
  126. Algebra

    solve: Ln(x+2)-Ln(4x+3)=Ln(1/x) I think this is a Log of Quotient

    asked by Toni