Questions Asked on
April 6, 2014

  1. English

    Revising often involves A. making an outline B. Makes substainial changes in content C. making grammar corrections D. making changes without a computer I think it is B

    asked by Angela
  2. Math

    A radioactive substance decays according to the formula Q(t) = Q0e−kt where Q(t) denotes the amount of the substance present at time t (measured in years), Q0 denotes the amount of the substance present initially, and k (a positive constant) is the decay

    asked by Vanessa
  3. Physics

    A bullet is fired horizontally with a speed of 100 m/s aiming at a target 20m away. It misses the target by??

    asked by Anonymous
  4. English

    Identify the part of speech or the form of speech in the underlines portion of the next sentence. Sleeping is my favorite hobby. A. Helping Verb B. Gerund C. Being Verb D. Infinitive I think it is B..

    asked by Angela
  5. Chemistry

    Propane (C3H8) burns according to the following balanced equation: C3H8(g)+5O2(g)→3CO2(g)+4H2O(g) Calculate ΔH∘rxn for this reaction using standard enthalpies of formation. (The standard enthalpy of formation of gaseous propane is -103.9 kJ/mol.)

    asked by Anonymous
  6. English

    "Mental distance" from a rough draft can be achieved by: A. waiting 24 hours before revising B. revising in a different place from where you have finished your revisions C. not sharing your draft until you have finished the revisions D. Using a computer

    asked by Angela
  7. statistics

    Assume a binomial probability distribution has p = .60 and n = 200. c. What is the probability of 100 to 110 successes (to 4 decimals)? d. What is the probability of 130 or more successes (to 4 decimals)?

    asked by Vanessa
  8. cape1 physics

    a hammer is often used to force a nail into wood.the faster the hammer moves,the deeper the nail moves into the wood.

    asked by kimesha
  9. English

    Divide the word inseparable into syllables A. Ins-ep-ar-a-ble B.In-sep-ara-ble C.In-sep-ar-a-ble D. In-se-par-able I think it is C

    asked by Angela
  10. Math

    Phosphorus-32 (P-32) has a half-life of 14.2 days. If 200 g of this substance are present initially, find the amount Q(t) present after t days. (Round your growth constant to four decimal places.) How fast is the P-32 decaying when t = 21.5? (Round your

    asked by Vanessa
  11. physics

    You are given a four-wheeled cart of mass 11 kg, where the distance between a wheel and its nearest neighbors is 2.1 m. Suppose we load this cart with a crate of mass 109 kg, where the crate's center of mass is located in the back-middle of the cart, 0.525

    asked by name
  12. physics

    Water towers store water above the level of consumers for times of heavy use, eliminating the need for high-speed pumps. How high above a user must the water level be to create a gauge pressure of 3.00×105 N/m2 ?

    asked by Mohanad
  13. Math

    The growth rate of Escherichia coli, a common bacterium found in the human intestine, is proportional to its size. Under ideal laboratory conditions, when this bacterium is grown in a nutrient broth medium, the number of cells in a culture doubles

    asked by Vanessa
  14. Math

    The surface area of a prism is 54 square inches. What is the surface area of a similar prism that is smaller by a scale of 1/3? My answer- 6

    asked by Unknown
  15. CHEM.

    1. a) What species are present in a 3.0 M NH3 solution? b) Qualitatively, what is the pH of this solution? c) What reaction(s) might occur when this solution is added to a solution containing Mn2+? d) What effect will adding HNO3 to the solution from part

    asked by Anonymous.
  16. math

    An alloy of copper is 10% copper and weighs 25 pounds. A second alloy is 18% copper. How much (to the nearest tenth lb.) of the second alloy must be added to the first alloy to get a 13% mixture.

    asked by justin
  17. physics

    Assuming bicycle tires are perfectly flexible and support the weight of bicycle and rider by pressure alone, calculate the total area of the tires in contact with the ground. The bicycle plus rider has a mass of 80.0 kg, and the gauge pressure in the tires

    asked by Mohanad
  18. math

    how many ways can you choose 3 dishes from a menu of 8? my answer is 56

    asked by steve
  19. Geometry

    what is the formula of a base area for a right trapezoidal prism?

    asked by ali
  20. Chemistry

    A sample of gas has a mass of 0.550g . Its volume is 111mL at a temperature of 75∘C and a pressure of 763mmHg . Find molar mass of gas

    asked by Amy
  21. chemistry

    When 0.451g of biphenyl (C12H10) undergoes combustion in a bomb calorimeter, the temperature rises from 26.7∘C to 29.6∘C.Find ΔErxn for the combustion of biphenyl in kJ/mol biphenyl. The heat capacity of the bomb calorimeter, determined in a separate

    asked by Anonymous
  22. CALC 2

    Let an = Hn - ln(n), where Hn is the nth harmonic number Hn = 1 + 1/2 + .... + 1/n a. Show that an > 0 for n>= 1 (Hint: show Hn >= integral from 1 to n+1 dx/x) b. Show {an} is decreasing by interpreting an - an+1 as a positive area. (Hint: use the previous

    asked by Bae
  23. math

    A 50 foot ladder is placed against a building so that it touches a point 40 feet above the ground. The distances ( in feet ) from the foot of the ladder to the building is a. 10 b. 20 c. 30 d. 45 e. 60 please answer and explain

    asked by thomas
  24. Biomechanics

    A person with a body mass of 65 kg was running over level ground with a strong tailwind, while wearing a 10 kg weighted vest. The tailwind applied a force of 125 N to the runner’s body in the horizontal direction. Early in the stance phase, the runner

    asked by Brendan
  25. Calc 2

    Question 2 Let an = Hn - ln(n), where Hn is the nth harmonic number Hn = 1 + 1/2 + .... + 1/n a. Show that an > 0 for n>= 1 (Hint: show Hn >= integral from 1 to n+1 dx/x) b. Show {an} is decreasing by interpreting an - an+1 as a positive area. (Hint: use

    asked by Bae
  26. chemistry

    a wet gas collected over water has a volume of 900 mL at50 degrees Celsius and a pressure of 84.6 kPa. The partial pressure of water at this temperature is 12.3 kPa. What is the volume of the dry gas at 120 kPa?

    asked by nina
  27. Chemistry

    My question is ..can anyone explain how to do problem #2? I feel lost. :( And could you also explain why? Problem#1, is that a regular dG = dH - TdS problem? Then using Go = -RTlnK to find K? Im just afraid if there are other seps to it.. 1. The combustion

    asked by Lynn
  28. Physical Science

    13. Why can convex mirrors only produce virtual images? Sadly, I can't find this answer in my book. :( Any help would be appreciated, please and thank you!

    asked by Alex
  29. history

    what happened in Tiananmen Square in 1989? -My book says that many students died but that was about it. Thanks

    asked by Victoria
  30. algebra 2

    What is the sum of the first 60 positive integers?

    asked by kathy
  31. PHI 208 Week 3 Reading Quiz

    Question 1. 1. It is unfair to criticize the profit-making purpose of business because: (Points : 1) it is in the nature of corporations and in the definition for their existence to form as a means to organize human effort more efficiently in order to

    asked by Jamski
  32. lotto,5 of ninety numbers

    I need a chart plan that will help me win Ghana national lottery.

    asked by Quayson Nyamiah Alex
  33. science

    2. Based on the results of your experiment, would you reject or accept each hypothesis that you produced in question 1? Explain how you determined this.

    asked by debie
  34. math

    Who am I? I have 2 in the ten thousands and the units place. The rest of my digits are 0.

    asked by Arnesh
  35. statistics

    Given that z is a standard normal random variable, compute the following probabilities (to 4 decimals). P(z -1.0) P(z -1.0) P(z -1.5) P(z -2.5) P(-3 < z 0)

    asked by Vanessa
  36. Biology

    Can someone please tell me if I have the right answers? Pasteur's experiments led to which theory? A. biogenesis theory B. endosymbiont theory C. evolution theory D. spontaneous generation theory I think its A or D Scientists have fossil evidence for which

    asked by Jane
  37. Chemistry

    What volume of Cl2 gas, measured at 687torr and 34∘C, is required to form 27g of NaCl?

    asked by Amy
  38. To Anonymous - English Help

    I'm sorry but I accidentally removed your post. Homework Help: English help Posted by Anonymous on Sunday, April 6, 2014 at 9:51pm. To look with admiration at someone or something is to ______ but to look at something very closely is to _____. If we seek

    asked by Ms. Sue
  39. CHP

    how to calculate FTE allowing 15% adjustment fact.

    asked by suzanne
  40. physics

    A cosmic-ray proton in interstellar space has an energy of 19.5 MeV and executes a circular orbit having a radius equal to that of Mars' orbit around the Sun (2.28 1011 m). What is the magnetic field in that region of space?

    asked by Anonymous
  41. English

    The common language used in acedemic and workplace settings is called: A.Slang B. Colloquial C.standard English d.jargon I would say jargon

    asked by Angela
  42. Physics

    Boxcar A, with a mass of 1500 kg, is travelling at 25 m/s to the east. Boxcar B has a mass of 2000 kg, and is initially at rest. The boxcars collide inelastically and move together after they get stuck. What is their combined velocity?

    asked by DeAnne
  43. CHEMISTRY

    Method for getting correct answer? Thank you! Initially there were equilibrium concentrations of 0.1887 M A, 0.1042 M B. Which of the equations below is correct if the pressure decreased by a factor of 2.40? Use the reaction below. 6A(g) ↔ 5 B(g) a. Qc =

    asked by Chemistry
  44. Math

    You are about to leave for vacation, but you forgot your socks! You go back to your room but lights are out, can't see. You remember that in your draw you have 10 pair black, 10 pair white and 11 pair blue all mixed up. How many socks do you need to take

    asked by Laney
  45. Statistics

    1. For the following research question, specify the parameter and give the null and alternative hypotheses. "Is there a difference in the proportions of male and female college students who smoke cigarettes? 2. For the following research question, specify

    asked by A
  46. Chemistry

    What are the signs of dH, dS, and dG for the following and please explain why? Also what does it mean by sublimation, and molten? 1. CO2(s) --> CO2(g) (Dry ice subliming) dH = ? dS = ? dG = ? 2. The electrolysis of molten NaCl(l). dH = ? dS = ? dG = ?

    asked by Lauren
  47. math

    Two stations, A and B, are located six miles apart on a railroad. The rates of cartage of coal are 50 cents per ton per mile from A and 75 cents per ton per mile from B. At a certain consumer's home, located on the railroad between A and B, the cost for

    asked by thomas
  48. Biomechanics

    Two ice skaters start out motionless in the center of an ice rink. They then push each other apart. The first skater (mass = 80 kg) moves to the right with a velocity of 2.5 m/s. The second skater (mass = 58 kg) moves to the left at some unknown speed. If

    asked by Brendan
  49. Calculus II

    using integration by partial fraction, prove that pi + integral from 0 to 1 of x^4(1-x)^4/1+x^2 = 22/7

    asked by chelsea
  50. Biomechanics

    While pushing off against the starting blocks at the beginning of a race, Olympic swimming great Michael Phelps generates a force that increases linearly from 0 N to 800 N over the first 0.30 s, and then decreases steadily back to 0 N over the remaining

    asked by Brendan
  51. Biomechanics

    Olympic cross country ski champion, Henrik Henrikson, is using a new ski wax, Gripola, that is supposed to stop his ski from slipping backwards when he pushes off against the snow (it gives him a coefficient of static friction between the ski and the snow

    asked by Brendan
  52. English

    1. He is too full. 2. He is overeating. 3. He is overeaten. (Are the three the same in meaning?)

    asked by rfvv
  53. Calculus II

    the gamma function r(x) is defined by r(x)= integral from 0 to infinity of x^n-1(e^-1)dx. find r(1), r(2), r(3)

    asked by chelsea
  54. English

    1. He went out without taking a shower. 2. He went out without a shower. (Are both the same in meaning?)

    asked by rfvv
  55. Discrete Math

    There are 150 students taking Discrete Mathematics II, Calculus II, and Physics I courses. Of these 51 are taking Discrete Mathematics II, 111 are taking Calculus II, and 63 are taking Physics I. There are 41 taking Discrete Mathematics II and Calculus II,

    asked by Anonymous
  56. calculus

    How to solve 2.5e^-t cos2t=0?

    asked by Gordon
  57. math

    The wheelers' bill at a restaurant is $63.00.How much money should Mr.Wheeler leave as a tip 15%?

    asked by algebra
  58. Physics

    In the device a 50g mass is hung from a pulley and released. A disk is placed on the platform. The platform has a radius of 5cm. The disk and platform go from rest to an angular velocity of 8.5rad/s in 2.5 seconds. What is the moment of inertia of the

    asked by Joe
  59. Science

    What are ten observations made by Charles Darwin on his voyage and what are their significance?

    asked by Zoey
  60. Chemistry

    How would you start and finish these questions by a step by step process? Does Amp equal to Joules? 1. How many grams of aluminum can be produced by the electrolysis of aqueous aluminum chloride by a current of 5.00 amps for 5.00 hours? 2. Consider the

    asked by Erika
  61. Math

    A triangular prism has a volume of 92 in.³ if all dimensions are multiplied by 1.6 what is the new volume?

    asked by Holly
  62. Calc 2

    Use the ratio or the root test to determine the convergence of the series: Sum of infinity and n=1 of arctan(e^-n), Sum of infinity and k=1 of sqroot(3^k)/(2^k)

    asked by Bae
  63. physics

    A series RLC circuit is made with a C=100pF capacitor, an L=100μH inductor, and an R=30Ω resistor. The circuit is driven at 5×106rad/s with a 1V amplitude. What is the current oscillation amplitude in amps

    asked by roger
  64. Biographical Essay Evaluation (Writeacher)

    Revision of second paragraph: "Liesure time is another one of my favorite things about summer. It brings me happiness beyond belief. It enables me to spend time with my family, to take part in the things they wish to do. It enables me to live life without

    asked by Victoria
  65. Chemistry

    I don't really understand these questions and their processes. And I am a bit iffy on redox reactions. For problem 3, can you show a step by step process how to do the problem? Problem 2, I do not fully understand how to do it at all. How would you know

    asked by Mika
  66. chemistry

    PLS HELP ME AND THANK YOU:) What is the molarity if 2.18 grams of CO(NO3)2.6H2O dissolved in 50.00ml of solution?

    asked by may
  67. statistics

    11.68 is what percent of 141

    asked by Anonymous
  68. math

    A rectangular piece of cardboard 9" x 12" is made into an open box by cutting a 2 1/2" square from each corner and bending up the sides. Find the volume of the box if no allowance is made for overlapping of the edges. a. 70 cu. in. b. 154 3/8 cu. in. c.

    asked by thomas
  69. advanced algebra

    Jennifer figures that she uses 2 pens per month. She started the year with 10 pens. How do I write the equation that represents the number of pens, y, she will have after x months.

    asked by Colb
  70. science -heredity

    there are about 100,000 genes in each cell. Why would it be important scientists to identify what every one of these genes does? I put Genes will describe a trait of a person, example, it will determine if a person will be small or tall; blue or brown eyes

    asked by sara
  71. Math

    What are mathematical concepts are used to make string art?

    asked by Juanita
  72. Chemistry

    1) it is found that .30 M solutions of the three shots Na3X, Na2Y and NaZ have pH's of 8.5, 7.0 and 10.5 not necessarily in order. (X,Y, and Z AE anions. Na is sodium ion) A) explain how anions can act as bases in aqueous solution. Write a chemical

    asked by Reggie
  73. math

    Mr. Benedict left half of his estate to his wife, one-fourth to his son, one-fifth to his daughter and the remainder, $5000 to his college. What is the total amount left by Mr. Benedict? a. $ 9,250 b. $ 10,000 c. $ 16,000 d. $ 50,000 e. $ 100,000 please

    asked by thomas
  74. Child Psychology

    why do fine motor skills develop slower than gross motor skills?

    asked by Chanel
  75. chemistry

    what is the molecular mass of a gas if 0.833 g of it occupies 210 mL at 106.3 kPa and 8 degrees Celsius.

    asked by lisa
  76. chemistry

    What mass of N2O occupies a volume of 0.500 L at 0 degrees Celsius and 101.325 kPa?

    asked by stella
  77. essay help/english

    Social work in Adaption: Ethical Dilemmas and demographics (Wages,hours and job outlook etc.) thank you!

    asked by Anonymous
  78. Physic

    How much energy is required to change a 40 g ice cube from ice at -25°C to steam at 105°C? Answer in J.

    asked by Renee
  79. TO MS SUE Essay help

    I have to write a essay about the confederation of Canada in 1867 and why it was a good choice. I have all of my body paragraphs done but I'm having trouble thinking of a proper introduction. My first sentence for my intro is: confederation was the best

    asked by Anonymous
  80. Chemistry URGENT

    I need help understanding oxidation I have a problem that states: The proper assignment of oxidation numbers to the elements in the compound LiAsO3 would be: I think the answer is +1 for Li, +3 for As and -2 for O. I think I am confusing oxidation with

    asked by linda
  81. science

    A uniform AB 2m long Rod which exerts a downwards force of 60N at its centre is placed on a knife egde support position 0.8m from A determine the vertical downward force required at A to prevent rotation of the Rod.

    asked by mwazzy
  82. Math

    Alex's favorite restaurant is a buffet-style Chinese restaurant downtown. Each time he goes, he chooses 2 appetizers and 1 entree. If the restaurant has four appetizers and 5 entrees to choose from, how many, times could Alex go to the restaurant without

    asked by Tom
  83. Algebra

    What is the simplified form of 2x + 6 ? 4x - 8 (there should be a line between them.)

    asked by Sandra
  84. MATH

    Which expression is a polynomial???? A: 11 0ver the square root of x B: square root of 11 times x C: x - square root 11 D: 11 over the square root of x to the 2nd power (sorry I am not sure how to insert square root symbols or fractions, so u have to

    asked by Amber
  85. History

    What factors gave rise to the youth counterculture of the 1960's?

    asked by Victoria
  86. math

    .An angle is 10° more than the measure of its complement. Find the number of degrees in each angle.The angles measure _ degrees.

    asked by justin
  87. ashford

    Football is the best sport. The athletes are amazing, and it is extremely complex. (Points : 1) is it deductive or inductive

    asked by sallie
  88. Teachers aide

    important concept that children learn by modeling other children is associated with which one of the following researchers?

    asked by Soso
  89. Chemistry

    if you have 9.50x10^25 molecules of KClO3 how many grams of KCl and O2 will you get? The balanced equation is 2KClO3 = 2KCl + 3O2

    asked by Emma
  90. geometrey

    whats a circle?

    asked by sar
  91. geometrey

    a chord of 42 cm with the distance of 5 cm from center of the circle find the raduis of the circle?/.

    asked by sar
  92. TO MS SUE

    How many years old is Canada? It became a country in 1867, how old is Canada?

    asked by Anonymous
  93. algebra 2

    what is the sum of the first 11 terms of the arithmetic series in which asub one = -12 and d=5

    asked by kathy
  94. science

    What Develop hypotheses would you predicting the efficiency of solar energy from direct sunlight against the 4 variables tested?

    asked by debie
  95. physic

    How much energy is required to change a 40 g ice cube from ice at -25°C to steam at 105°C?

    asked by Renee
  96. science

    4. How could you increase the electricity generated by a solar cell during the day, when the sun’s angle is constantly changin

    asked by debie
  97. science

    1. Develop hypotheses predicting the efficiency of solar energy from direct sunlight against the 4 variables tested?

    asked by debie
  98. Chem Help

    Consider a solution that contains Ag+ , Ba2+, and Pb2+ each at a concentration of .2M a) You add NaCl until the concentration of Cl- is 5.0 x 10^-3 M. A white precipitate forms. How do you determine whether that precipitate was AgCl or PbCl2? b) If you

    asked by Anonymous.
  99. Physics

    You are given a four-wheeled cart of mass 11 kg, where the distance between a wheel and its nearest neighbors is 2.1 m. Suppose we load this cart with a crate of mass 109 kg, where the crate's center of mass is located in the back-middle of the cart, 0.525

    asked by Christina
  100. physics

    A special train is traveling down a long, straight track with a constant acceleration of 9m/s^2 in the forward direction. The train is located on Mars where the acceleration due to gravity is 9 m/s^2. If a passenger drops a ball and measures the

    asked by anonymous
  101. Physics

    Consider two masses that hang from an overhead beam. The first mass of 86.4 kg is attached to the beam using an ideal rope. The second mass of 20.8 kg is attached to the first mass with an ideal rope and hangs directly under the first mass. (a) Find the

    asked by name
  102. physics

    A train is traveling along a straight, horizontal track at a constant speed of 20 mph (i.e.,a non-relativistic speed). An observer on the train places paint cans at the front and back of one of the cars. She then detonates the cans. Due to a malfunction,

    asked by anonymous
  103. Fractions

    Eight equal size pieces of cake 6 people ate all the pieces how could they have the same amount of cake

    asked by Anonymous
  104. maths

    Three positive numbers form an increasing G.P. If the middle term in this G.P. Is doubled , the new numbers are in A.P. Then the common ratio of the G.P. Is?

    asked by sagar tiwari
  105. Chem Help!

    Assume that a given solution caontains Ag+or Ba2+ or a mixture of both. A reasonable method for doing a qualitative analysis on this solution might be sketched out as followes (remember || means a precipitate forms and | means a solution remains. It is

    asked by Anonymous.
  106. math

    Which of these phrases is correct? A 9 is a multiple of 3 and a factor of 12. B 9 is a factor of 45 and a multiple of 5. C 9 is a multiple of 6 and a factor of 72. D 9 is a factor of 54 and a multiple of 3.

    asked by Carlotta
  107. Math

    During a flu epidemic, the number of children in the Woodbridge Community School System who contracted influenza after t days was given by the following. Q(t) = 7000/1+249 e−0.6 t (b) How many children had the flu after 10 days?

    asked by Vanessa
  108. Math

    The percentage of a certain brand of computer chips that will fail after t years of use is estimated to be P(t) = 100(1 − e−0.12t ). What percentage of this brand of computer chips are expected to be usable after 3 years? (Round your answer to one

    asked by Vanessa
  109. Math (Trigonometry)

    1. If sec x + tan x = 3/2 and 0 ≤ x ≤ pi/2 then the value of sin x is... 2. If 0 ≤ x ≤ pi/2 and tan²x + sec x = 5 then cos x = ... Please help

    asked by Patrick
  110. algebra 2

    sigma upper limit 28 algebraic expression (8i-13) lower limit 1 index=i

    asked by kathy
  111. Math

    A closed box has a height which is two times it’s width. The length is 15 cm less than five times the width . What is the domain and range for the surface area function ?

    asked by Anonymous
  112. physics

    Consider a coaxial cable with 2Amps in the center conductor coming out of the page, and 1Amp in the outer conductor going into the page. The center conductor has a radius of 1mm, the outer conductor's inner radius is 2mm, and the outer conductor's outter

    asked by roger
  113. College Chemistry (DrBob222)

    Use the Nernst equation to calculate the iron (II) concentration for the following iron/copper electrochemical cell when [Cu2+] = 0.012 M and Ecell = 0.750 V at 35°C. Cu2+ (aq) + Fe (s) --> Cu (s) + Fe2+ (aq)

    asked by Adrik
  114. Business

    Bob buys a house for 150,000 with a mortgage rate of 5.8% convertible monthly. At the time of purchase he owns a 10,000 20-year zero coupon bond that earns 4.5% annually. The bond matures in 15 yeas. He would like to use the proceeds from the bond to make

    asked by John
  115. Math

    The length (in centimeters) of a typical Pacific halibut t years old is approximately. (b) How fast is the length of a typical 9-year-old Pacific halibut increasing? (c) What is the maximum length a typical Pacific halibut can attain?

    asked by Vanessa
  116. Project management

    work breakdown structure deliverables are ignored and replaced with activities or tasks that have been grouped in phases True or false? ****(False)

    asked by Patti
  117. APA style Help!!!

    Ely, E. (1997, April). The non-traditional student. Paper presented at the American Association of Community Colleges 77th Annual Conference, Anaheim, CA. Retrieved from -------(web site)

    asked by Uygur
  118. biology

    In cat, the gene for black coat is dominant to the gene for white coat. A heterozygous black cat is crossed with a white cat. which of the following is true about the ratio of the offspring from the cross? black coat white coat A 1 3 B 3 1 C 4 1 D 4 0 can

    asked by Didi
  119. Chemistry

    For a reaction that has an equilibrium constant of 9 × 10–9, which of the following statements must be true? A) ∆G° is positive. B) ∆G° is negative. C) ∆H° is negative. D) ∆H° is positive. E) ∆S° is positive.

    asked by Katie
  120. History

    How do you think southern whites reacted to president Andrew Johnson’s plan? President Johnson’s Plan (10%+)  Offered amnesty upon simple oath to all except Confederate civil and military officers and those with property over $20,000 (they could

    asked by anonymous
  121. chemistry

    what is the number of moles of nonvolatile nonelectrolyte dissolved in 3.5 kg of water when the solution boils at 101.86 degrees C

    asked by anonymous
  122. Chem

    The following questions refer to the following system: A total of 30.0 mL of a .10M solution of a monophonic acid (Ka = 1.0 x 10 ^-5) is titrated with .20M sodium hydroxide solution. 1) Before the titration begins, the pH of the solution is about A) 2 B) 5

    asked by Charlie
  123. physics

    A series RLC circuit is made with a C=100pF capacitor, an L=100μH inductor, and an R=30Ω resistor. The circuit is driven at 5×106rad/s with a 1V amplitude. What is the current oscillation amplitude in amps

    asked by roger
  124. History

    What higher education institution were established to assist blacks during reconstruction? is it college?

    asked by anonymous
  125. no one's here to help us!!! -.-

    help us!!! plzz btw this is not a question :P

    asked by anonymous
  126. statistics

    Collina’s Italian Café in Houston, Texas, advertises that carryout orders take about 25 minutes (Collina’s website, February 27, 2008). Assume that the time required for a carryout order to be ready for customer pickup has an exponential distribution

    asked by Vanessa
  127. Math

    Jane has a pizza shop. She has 1 type of crust, 1 type of sauce and 6 toppings. How many 2 topping pizzas can she make. Note the same topping can't be used for 1 pizza

    asked by Evan
  128. CHEMISTRY

    Write the net ionic equation for the reaction between...(and MUST INCLUDE STATES, please post answers to all so i can verify if im correct and explanation to one of them) a) potassium hydroxide and copper(I) nitrate b) potassium sulfite and lead(II)

    asked by NEED HELP PLEASE!!!
  129. CHEMISTRY

    To what temperature would the reaction below need to be heated to have a rate constant of 8.474e-4 M-1s-1 if the rate constant was 2.7000e-4 M-1s-1 at 327.00°C and the activation energy was 166.000 kJ/mol? H2(g) + I2(g) ↔ 2HI(g) a. 609.24°C b.

    asked by Chemistry
  130. CHEMISTRY

    The initial concentration of PCl5 was 0.1983 M. It was allowed to decompose at some temperature until equilibrium had been attained (see reaction below). What must be the equilibrium concentration of PCl3? PCl5(g) ↔ PCl3(g) + Cl2(g) Kc = 0.0580 a. 0.1162

    asked by Chemistry
  131. Chemistry

    A volume of water delivered using a buret has a mass of 2.67 g. What was the final volume reading on the buret if the inital volume reading was 0.30 ml? [assume the density of water is 1.00g/mL]

    asked by Anonymous
  132. CHEMISTRY

    If an explanation for correct answer could be provided, that would be great! Which equilibrium constant indicates that the reaction will produce mostly products? a. Kc = 3.46x10-6 b. Kc = 1.96x10+7 c. Kc = 0.319 d. Kc = 0.37

    asked by Chemistry
  133. CHEMISTRY

    Method for getting correct answer for this? Thank you! A mixture containing an initial concentration of 0.1877 M for H2 and 0.1432 M for Cl2 is allowed to come to equilibrium (see reaction below). What must be the equilibrium concentration of HCl? H2(g) +

    asked by Chemistry
  134. CHEMISTRY

    Method for getting correct answer for this? Thank you! For the reaction A ↔ 2B K = 3.80x10-7 , if one started with 0.154 M A approximately how much A and B would there be after equilibrium had been established? a. very little A, 0.154 M B b. 0.126 M A;

    asked by Chemistry
  135. CHEMISTRY

    Method for getting correct answer? Thank you! What is the value of Kc at 226.85 °C for the reaction below if Kp is 6.24e-3 at this temperature? CO(g) + 2H2(g) ↔ CH3OH(g) a. 3.70e-6 b. 2.1614 c. 1.08e5 d. 10.5000

    asked by Chemistry
  136. physics

    Consider a coaxial cable with 2Amps in the center conductor coming out of the page, and 1Amp in the outer conductor going into the page. The center conductor has a radius of 1mm, the outer conductor's inner radius is 2mm, and the outer conductor's outter

    asked by Anonymous
  137. Math

    Square miles 66, 000 and 1, 000, 000 people. Population density is a rate that is indicates how crowed and area is. A proportion is used to find population density, or number of persons per square mile. Population/area = number of persons/1 square mile.

    asked by Alice Urgent
  138. CHEMISTRY

    Method for how to get answer? Thank you! For the equilibrium reaction below. To what is Kc equal? N2(g) + 3H2(g) ↔ 2NH3(g) a. [N2] + 3[H2] ------------------ 2[NH3] b. [N2][H2]3 ------------------ [NH3]2 c. 2[NH3] --------------- [N2]+ 3[H2] d. [NH3]2

    asked by Chemistry
  139. CHEMISTRY

    Method for getting correct answer? Thank You! What is Kp for the reaction below, if Kc = 1.13e-3 at 111.2°C? 4A(s) + 5B(g) ↔ 3C(g) a. 1.36e-5 b. 1.15e-12 c. 1.14e-6 d. 8.42e-3

    asked by Chemistry
  140. Chemistry

    The following questions refer to the following acids and bases. A) Hydrazoic acid HN3 Ka = 1.9 x 10^-5 B) Hydrofluoric acid HF Ka = 6.8 x 10 ^-4 C) Nitrous Acid HNO2 Ka = 4.5 x 10^-4 D) Phenol C6H5OH Ka = 1.3 x 10^-10 E) Aniline C6H5NH2 Ka = 4.3 x 10^-10

    asked by Zachary
  141. science

    Im researching a disease caused by a cellular organelle that does not function properly. My topic is "cardiamuscle disease" and its organelle is the cytoskeleton. Ive searched google but cant seem to find a website to help me begin

    asked by Adam
  142. CHEMISTRY

    Method for getting correct answer? Thank you! Initially there were equilibrium concentrations of 0.1887 M A, 0.1042 M B. Which of the equations below is correct if the pressure decreased by a factor of 2.40? Use the reaction below. 6A(g) ↔ 5 B(g) Qc =

    asked by Chemistry
  143. Biology please help

    I have a project due tomorrow and i cant find a good place to start. Cardiacmuscle disease is a disease that is a result of the cytoskeleton not functioning properly. I cant find anything on cardiac muscle disease. THIS IS NOT CARDIOMYOPATHY

    asked by Adam
  144. CHEMISTRY

    Method for getting correct answer? Thank you! The reaction below is an endothermic reaction. What would one have to do to shift the equilibrium to the right? SO2Cl2(g)↔SO2(g) + Cl2(g) a. Decrease the temperature b. Increase the temperature c. Remove some

    asked by Chemistry
  145. physics

    A lightning bolt may carry a current of 1.00 ✕ 104 A for a short time interval. What is the resulting magnetic field 134 m from the bolt? Assume that the bolt extends far above and below the point of observation.

    asked by Chris
  146. Quick English help

    Put the following words in the correct place in these sentences. Revoke, Provoke, Invoke A. If we put something off until later, we _____ it. And something done for posterity is done for ____. If a Congressional Medal of Honor is awarded posthumously, it

    asked by Anonymous
  147. Math

    Volume of a cylinder is 15 cubic inches. If all the dimensions are multiplied by 2.7 what is the new volume?

    asked by Karley
  148. Math/Physics

    Problem Question: Rashad started The 780km drive from Sault st. Marie to Ottawa at 09:00. His average speed was 100km/h. Two hours later Tyson left Ottawa for Sault St. Marie. He drove at 80km/h on the same highway. How far from Ottawa, and what time of

    asked by M.
  149. Statistics

    A procedure in regression analysis where Predictor or Independent Variables are coded as 1 or 0 (representing categories) and can be used to produce ANOVA Tables under the General Linear Model is known as…?

    asked by C
  150. Stats

    the average placement test score of a sample of 64 students out of 1000 registered at a community college is 70 with a standard deviation of 15. Construct a confidence interval with a 5% chance of error.

    asked by D
  151. Math

    The volume of the cylinder is 15 cubic inches. If all the dimensions are multiplied by 2.7 what is the new volume? My Answer- 295.245

    asked by Holly
  152. Chemistry

    Why organic compound are volatile in nature

    asked by M.ayyaz
  153. English (essay help)

    I have to write a essay about the confederation of Canada in 1867 and why it was a good choice. I have all of my body paragraphs done but I'm having trouble thinking of a proper introduction. My first sentence for my intro is: confederation was the best

    asked by Anonymous
  154. Science

    How many mole of magnesium atoms are present in 0.50g of manesium (mg=24)

    asked by Moses
  155. Science

    When did Gregor Mendel publish his results ? When did people notice how important his work was ?

    asked by Anabelle
  156. chemistry

    define a chemical bond

    asked by angelena
  157. CALC 2

    a. Consider the following limit as a fact: lim n-> infinity ((n!)^1/n)/n = 1/e Use this limit to study the convergence of this series using the root test. Sum of infinity and n=1 of ((3^n)n!)/n^n b. Use the ratio or the root test to determine the

    asked by Bae
  158. Calculus A 14

    Please Help.... A hard-boiled egg at 98℃ is placed in a sink of 18℃ water to cool. After 5 minutes, the eggs temperature is found to be 38° C. a) Find the value of P in Newton’s Law of Cooling. b) Find the value of the constant k rounded to nearest

    asked by Raven
  159. Science

    Please help !! Look at my other question on science plzzzzzzzzzzzz

    asked by Anabelle
  160. The Open Boat (Short Story)

    Who is the narrator of The Open Boat? A) The oiler B) The captain C) The correspondent D) The cook I think it's the correspondent, but I'm not sure. Someone help, please?

    asked by Isabella