Questions Asked on
July 17, 2012

  1. Chem

    How many moles of hydrogen atoms are present in 2.31x10^24 molecules of CH4?

    asked by Kristine
  2. Chemistry

    If 1.22 grams of magnesium reacts with 100 ml of 6.02 M HCl solution. How much heat is evolved? Density of the HCl solution is 1.10 g/ml. Assume the specific heat of water 4.184 J/gC is the specific heat of the solution. Mg  +  2 HCl   à  MgCl2  + 

    asked by Anonymous
  3. College Algebra

    Sandy is going on a business trip to Washington state. She has a 46 inch umbrella to pack since she will be there during rainy season. She plans to pack the umbrella in the diagonal of her suitcase, but she has to buy the suitcase first. The airline

    asked by BFG
  4. College Algebra

    The conjugate of square root of 2+d is________.

    asked by BFG
  5. Econ

    Assume that American rise sells for $100 per bushel, Japanese rice sells for 16,000 yen per bushel, and the nominal exchange rate is 80 yen per dollar. A.Explain how you could make a profit from this situation. What would be your profit per bushel of rice?

    asked by Jay
  6. english

    which one of the following sentences contains a collective noun? A. the quality of mercy is not strained. B. wo among you is a butcher, a baker, or a candlestick maker? C. Listen, my children, and you shall hear. D. the legislature met in secret session.

    asked by Alexander
  7. science

    A pair of fair dice is tossed once. If the sum of the two numbers is greater than 9, the probability that one of the numbers is a 6 =

    asked by chinthaka
  8. algebra

    Lowest term 9/11 - 5/12. Please need help confuse

    asked by Hate math
  9. algebra

    Lowest term 9/11 - 5/12. Please need help confuse

    asked by Hate math
  10. english

    did i use the comma rule correctly? The oil from Eucalyptus trees which are native, to Australia is known for its medicinal properties.

    asked by aran
  11. math

    9/10 of a property costs Rs.6543 Find the cost of 3/8 of property

    asked by Anonymous
  12. physics

    how much will the length of a 1.0 km section of concrete highway change if the temperature varies from -15 Celsius in the winter to 41 Celsius in the summer?

    asked by gen
  13. Physica

    Peace, and mercy and blessings of God Atqm thank you for helping me teach my children and success in physics at the Mah their college education and that the wrinkles in the balance Hassanatkm for all and especially Damo,Drwls, bobpursley.Elena

    asked by thank
  14. maths urgent please

    A vessel is being filled at a variable and the volume of liquid in the vessel at any time t is given by V = A( 1- e^-kt) V a) Show that dV/dt = k(A-V) b) if one quarter of the vessel is filled in 5 minutes, what fraction is filled in the next 5 minutes? c)

    asked by Michelle
  15. Physica

    a man pushes a box of mass 5 kg in a horizontal direction by 10 N force on the surface through a distance of 5m if the cofficien of kinetic friction is 0.2 the total work done on the box is

    asked by 1999999
  16. science

    Upton Chuck is riding the Giant Drop at Great America. If Upton free falls for 2.6 seconds, what will be his final velocity and how far will he fall?

    asked by gian
  17. math

    A sporting goods company has a distribution center that maintains inventory of fishing rods. The fishing rods have the following demand, lead time, and cost characteristics: Average demand = 95 units per day, with a standard deviation of 18 units Average

    asked by Candace
  18. math

    You are the buyer for your university bookstore. One of the textbooks has a cost to you of $104 and you sell it to students for $208. In this case, however, you cannot salvage any value from copies that do not sell because a new edition is published every

    asked by Candace
  19. math

    You manage inventory for your company and use a continuous review inventory system to control reordering items for stock. Your company is open for business 310 days per year. One of your most important items experiences demand of 24 units per day, normally

    asked by Candace
  20. Math

    an = 3n - 1 Answer 2, 3, 4, 5 2, 5, 8, 11 -2, -5, -8, -11 4, 7, 10, 13 3 points Question 2 Write the first four terms of the sequence whose general term is given. an = 2(2n - 3) Answer -6, -2, 2, 6 -1, 1, 3, 5 -2, -4, -6, -8 -2, 2, 6, 10 3 points Question

    asked by Tony
  21. physic

    A 1500 kg car moving at 10 m/s is stopped by the action of its brakes. The work done by the car's brakes is ____ Joules.

    asked by Anonymous
  22. physics

    Two small nonconducting spheres have a total charge of 91.7 µC. (a) When placed 1.10 m apart, the force each exerts on the other is 12.0 N and is repulsive. What is the charge on each? (Round your answers to the nearest 0.1 µC.) (b) What if the force

    asked by Bernice
  23. biology

    How do I calculate protein concentration if I know the purity is 97.3% and MW = 2666.31 kDA Thanks

    asked by Jenni
  24. Physics

    A horse pulls upon a wagon, but according to Newton’s third law the wagon pulls back with an equal and opposite force upon the horse. How then can either the wagon or the horse move? I'm supposed to draw a free body diagram but I'm not sure on the

    asked by Alex
  25. biology

    How do I calculate protein concentration if I know the purity is 97.3% and MW = 2666.31 kDA Thanks

    asked by Jenni
  26. chemistry

    what are all the names of the compound CH3OH?

    asked by aakanksha
  27. Financial Accounting

    Jane Doe of Creative Marketing was recording transactions into the accounting records to prepare financial statements for the bank in a loan application. Her expenses were higher than anticipated and she was concerned about the effects on net income. As

    asked by Donna
  28. Financial Accounting

    Jane Doe of Creative Marketing was recording transactions into the accounting records to prepare financial statements for the bank in a loan application. Her expenses were higher than anticipated and she was concerned about the effects on net income. As

    asked by Hudson
  29. geometry

    which of the following can be self simialr? a) a phone be b) a tree branch c) a stapler d) none of the above

    asked by Bread
  30. Geometry

    what is the third term of a recursive sequence that follows the pattern 5x-3 and has a first term x =2?

    asked by Bread
  31. cjs/210

    Can someone help me find a website to find the answers to the following questions? Examples of technology used in policing and how technology enhances or detracts from police organizations’ ability to function Examples of less-than-lethal weapons and how

    asked by Meka S
  32. algebra

    Find four consecutive odd integers so that five times the sum of the first and third integers excceeds four times the sum of the second and last integers by 14.

    asked by tempest
  33. CJS/230

    Can someone please help me find a website to find the answers to the following questions? What is prisoner rehabilitation? What are the origins of prisoner rehabilitation? How does prisoner rehabilitation affect prisons and general society? What

    asked by Meka S
  34. math

    how old am i if 400 reduced by 2 times my age is 236

    asked by Taylor
  35. math

    a recipe for bread call for 5 1/6 cups of flour. matt accidentally put in 5 5/6 cups. how many extra cups did he put in?

    asked by Taylor
  36. math

    heather had $23 to spend on three raffle tickets. after buying them she had 11. how much did each raffle ticket cost

    asked by Taylor
  37. Music

    1. How did the music business change in the early 1970s? 2. In what ways did rock music become more conservative in the 1970s? 3. Name three technological advances in sound or recording that helped change rock in the late 60s and early 1970s. 4. Name three

    asked by Jehu Milord
  38. math

    how do you Solve 2log x-log 3=2 pls help

    asked by ted
  39. algebra 117b

    I am really stuck if you could me please with this problem y=kxto find yfor x=6 y=-65when x=9 -65=k.9 k=- this is where I get stuck

    asked by BERNIE
  40. algebra 117

    I am stuck on this one 3/x^2+x-6, x=3

    asked by BERNIE
  41. algebra 117

    y=-65,65,whenx=9 help with this one please

    asked by BERNIE
  42. Math

    Logan wants to determine the distance across the river from points B to C. If she is able to determine the measures given on the map using surveyors’ tools, what is the distance between points B and C? Round the answer to the nearest tenth of a foot

    asked by Nora
  43. conditional probability

    You have two bags of marbles. Bag 1 has 5 red and 6 blue marbles. Bag 2 has 20 green and 5 red marbles. What is the probability of drawing a red marble out of Bag 2, given that you drew a red marble out of Bag 1?

    asked by Anonymous
  44. Calculus

    After its fastest rate of growth ever during the 1980s and 1990s, the rate of growth of world population is expected to slow dramatically in the twenty-first century. The function G(t) = 1.58e−0.213t gives the projected annual average percent population

    asked by Jessa
  45. Physics

    A particular steel guitar string has mass per unit length of 1.79 g/m. and tension of 61.9 N. For the wave speed to be increased by 1.9%, how much should the tension be changed? I tried increasing the wave speed (186 m/s) by 1.9%, plug that into

    asked by Bruce
  46. Calc

    Find the second derivative of the function. f(x) = e−3x + 5e4x

    asked by Alice
  47. flvs

    Your teacher has a jar of chocolate candies. For every completed assessment, she gives herself three pieces of chocolate. candies eaten after 67 completed assessments

    asked by shane
  48. Calculus

    find the derivative of the function: f(x)=6ln(x)/x^9

    asked by Tara
  49. math

    -9 1/4=-2x with steps please

    asked by Taylor
  50. Physics

    A sinusoidal wave traveling on a string is moving in the positive x-direction. The wave has a wavelength of 8 m, a frequency of 60 Hz, and an amplitude of 9 cm. What is the wave function for this wave? (Use any variable or symbol stated above as

    asked by Bruce
  51. Chemistry

    Describe what hard water is and how a water softening unit works. Provide balanced chemical equations to show how sodium sulphate can remove these ions (Magnesium and Calcium). The first was no problem, but I am having trouble trying to get through the

    asked by Hannah
  52. math

    -3 1/2=7/4a

    asked by Taylor
  53. tax accounting

    to create a 10 yr term bond schedule with semi annual payments (principal is $10 million); stated interest rate is 8% and market rate is 6%-how would you do it

    asked by M.white
  54. math

    how to solve log basex 8=-1/2 pls help

    asked by ted
  55. conditional probability

    Among a group of people, 10% are from NYC and 90% are not. All people from NYC are under 18 years old, and 60% of those not from NYC are also under 18 years old. One person is chosen at random, and he or she is under 18. What is the probability that the

    asked by Tifini
  56. Business Finance

    Why should we ever sell stock in our company, since we can lose control by doing so?

    asked by Fran
  57. Physics

    Two particles, one with negative charge -Q and the other with positive charge +2Q, are separated by a distance d. Both charges lie on the x-acis with the negative charge at x=0. At what point(s) along the line joining the particles is the potential equal

    asked by Michael
  58. Physics

    An alpha particle has a kinetic energy of about 5 MeV after they are far from the nucleus. Use this information to estimate the size of a nucleu by assuming that the alpha particle leaves the edge of the nucleus with zero kinetic energy and that the

    asked by Michael
  59. Psychology

    How would the researcher randomly select files? (What does the process look like?)

    asked by janice
  60. Physics

    If a plane is 2.00km above ground, and is traveling at 250 m/s [east] when it drops a bomb, will the bomb blow up the target which is 5.05km [horizontal distance] from the place?

    asked by Dab353
  61. Math

    what is the domain of this function how did you find the domain. f(x)=(2x-3)/(x+9)

    asked by chchch
  62. Chemistry

    I have a question for chem 1LD webworks number 4. it asks to repeat the previous question steps and find the delta H for the high spin and low spin for Fe(ox)3 3- but calculate with B3LYP, 6-31G* instead of a semi-empirical

    asked by Billy
  63. math

    what is 270% of 2 inches

    asked by Taylor
  64. math grade 12

    how to solve log basex 8=-1/2 pls help

    asked by ted
  65. Math - Trigonometry

    Find the value of x on this right triangle when a=20 b=5x-10 and c=2x(Square root of 5) A. x = 15 B. x = 10 C. x = 12 D. x = 16 A wheel 5.00 ft in diameter rolls up a 15.0° incline. How far above the base of the incline is the top of the wheel after the

    asked by Anonymous
  66. math

    The number of streetlights in a town is growing linearly. Four months ago (n = 0) there were 130 lights. Now (n = 4) there are 146 lights. If this trend continues, a. Find an explicit formula for the number of lights in month n b. How many months will it

    asked by Anonymous
  67. chemistry 12

    hey i was wondering, i have this question: Sketch a pH curve for the titration of 40.00mL of 0.100 M hydrazine, H2NNH2, having a K of 3.0x10^-6 by 0.100 M HCIO4 i know you can t sketch but could you tell me what to do with the "K of 3.0x10^-6" i could

    asked by dan
  68. Physics

    In a serious accident,a neclear plant's reactor vessal cracks,and all of the cooling water drains out.Although nuclear fission stops,readioactive decay continues to heat the reactor's 2.5 x 10^5 kg uranium core at a rate of 120 Mega-Watts.Once the core

    asked by brandy
  69. Statistics

    An ESP experiment is done in which a participant guesses which of 8 cards the researcher has randomly picked, where each card is equally likely to be selected. This is repeated for 200 trials. The null hypothesis is that the subject is guessing, while the

    asked by Sheri
  70. Physics

    A bullet with the mass of 45 g is fired into an 8.3 kg block of wood resting on a floor against a spring. This ideal spring (k = 76 N/m) has a maximum compression of 28 cm. What was the initial speed of the bullet?

    asked by KnowsNothing
  71. Mathematics

    x-z=7 x+y=3 z-y=6 For the above system of three equations x= ?

    asked by Willie
  72. physics

    A horse pulls upon a wagon, but according to Newton’s third law the wagon pulls back with an equal and opposite force upon the horse. Use a free-body diagram and show all the involved forces. i posted this question before but i still don't get it. Could

    asked by Alex
  73. math

    nicole wants to buy a sled for 37.27 she gives the cashier $40 how much cahnge does she receive

    asked by Taylor
  74. physics

    An electron moving to the right at 4.0% the speed of light enters a uniform electric field parallel to its direction of motion. If the electron is to be brought to rest in the space of 5.0 cm, determine what the strength of the field is.

    asked by Mercedes
  75. Chemistry II

    Quinine is a natural product extracted from the bark of the cinchona tree, which is native to South America. Quinine is used as an antimalarial agent. When 3.28 g of quinine is dissolved in 25.0 g of cyclohexane, the freezing point of the solution is

    asked by Sam
  76. algebra

    Synthesis: Find a polynomial for the shaded area of each figure. 21t+8 is on top of the outer box and 4t is on the left side of the outer box. On the inter box there is 3t-4 and 2t on the left side of the inter box. the area between the outer box and the

    asked by Ann
  77. US HISTORY

    Explain the role of the federal government during the industrialization of the United States during the years after the Civil War to 1900. Be sure to discuss at least three of the following: the railroads, time zones, land grants, Native Americans,

    asked by victoria
  78. math

    arjun whnts to buy a telescope that costs 330.69 how much change does he receive if he gives the cashier 340

    asked by Taylor
  79. English

    1. He stood silent. 2. He remained quiet. 3. He lay speechless. 4. He stood silently. 5. He stood quietly. 6. He was standing arrogantly. 7. He was standing silent. (Are they all grammatical? From #1 to #3, adjectives are used. In the other sentences,

    asked by rfvv
  80. Chemistry II

    A solution is made by mixing 38.0 mL of ethanol, C2H6O, and 62.0 mL of water. Assuming ideal behavior, what is the vapor pressure of the solution at 20 °C?

    asked by Sam
  81. math

    6 9/16k=31 13/32 i don't know the answer to this one really its hard

    asked by Taylor
  82. practical math

    A quantity of gas has a volume of 0.20 cubic meter and an absolute temperature of 333 degrees kelvin. When the temperature of the gas is raised to 533 degrees kelvin, what is the new volume of the gas? (Assume that there's no change in pressure.)

    asked by Anonymous
  83. math

    -8 1/8=6 1/2p is the answer 52.8 does p =52.8

    asked by Taylor
  84. calculus

    find the area of a rectangle bounded by the axes and one of its corner is a point in a curve y=1/x.

    asked by gracel morales
  85. geometry

    Find the surface area of a rectangular prism with a height of 11, a length of 15, and a width of 10.

    asked by alexis
  86. MAth

    Scores of an IQ test have a bell shaped distribution with a mean of 100 and a standard deviation of 19. Use the empirical rule to determine the following. a.) What % of people has an IQ score between 81 and 119?

    asked by quita
  87. Computer science

    As a member of the Information Security team at a small college, you have been made the project manager to install an access control system (ACS) in a dormitory. The ACS will automatically unlock the dormitory doors via an electronic proximity reader and

    asked by Kelon
  88. algebra

    Choose the best response to descrive the polynomial. -4x^3-2x^2+2x A) The coefficients are all negative B) The leading coefficient is negative C) It is a binomial D) It is of degree four. I was thinking it is c could someone tell me if I am right! Thanks!

    asked by Ann
  89. physics

    consider two asymptotic behaviors, what will happen if the two masses are equal to each other, that is, m1=m2? As a second matter of interest, what if one of the masses is much larger than the other: m1 >> m2? in regards to an atwood's machine. i don't

    asked by Jessica
  90. Stats

    Five measurements are taken and are 59.5", 61.33", 60.55", 61.00", 59.8". Find the likely size of the chance error in a single measurement.

    asked by Anonymous
  91. Algebra

    Add the following (-8^2-2x+4)+(x^2-9x+7) A)9x^2-7x+11 B)-8x^2+11x+11 C)-7^2-11x+11 D)-7x^4-11x^2+11

    asked by Anonymous
  92. MATH

    Use a table of trigonometric values to find the angle è in the right triangle in the following problem. Round to the nearest degree, if necessary. cos è=? A=22 H=38

    asked by MARTIN
  93. math

    How much would you need to deposit in an account now in order to have $20,000 in the account in 4 years? Assume the account earns 5% interest.

    asked by Anonymous
  94. algebra

    Essay question: show all work find the difference. (6x^2+7)-(6x^2-4x-5)

    asked by Anonymous
  95. Algebra

    Find the product: -6x(-8x^2+x+5) A)-14x^3-5x^2-x B)48x^3+x+5 C)48x^3-6x^2-30x D)48x^2-6x-30

    asked by Anonymous
  96. math

    how many 60"pieces can be cut from a 40 foot length

    asked by tamika
  97. math

    how do you write one third the volume of the pool as an expression

    asked by cj
  98. Chemistry

    What is the freezing point of a solution that contains 10.0 g of glucose (C6H12O6) in 100 g of H2O? Kf for water is 1.86oC/m

    asked by Sam
  99. business

    Can anyone tell me where i might be able to print a copy of a proposal for a small construction job. In my business class we need to bid on a job and I have been looking for sample proposal bid or a proposal where I can simply add the work that will be

    asked by RT
  100. Biomechanics

    A ball is thrown vertically upwards in the air at a velocity of 50(m/s) and reaches a maximum height of 20(m). Calculate the time when the ball reaches the 10(m) mark, while going up and coming down. Use the following equation of motion: y(f) = y(i) +

    asked by Jack
  101. Math

    A train travels 75 feet in 1/13 second. At the same speed, how many feet will it travel in 5 1/2 seconds?

    asked by Yoana
  102. Math - Trigonometry

    Find the value of x on this right triangle when a=20 b=5x-10 and c=2x(Square root of 5) A. x = 15 B. x = 10 C. x = 12 D. x = 16 A wheel 5.00 ft in diameter rolls up a 15.0° incline. How far above the base of the incline is the top of the wheel after the

    asked by Anonymous
  103. Statistics

    A normally distributed population has a mean of 40 and a standard deviation of 12. What does the central limit theorem say about the sampling distribution of the mean if samples of size 100 are drawn from this population.

    asked by Christie
  104. Statistics

    a. In a random sample of 500 observations , we found the proportion of successes to be 48%. Estimate with 95% confidence the population proportion of successes. B. Repeat part (a) with N=200 C. Repeat part (a) with N=1000 I need to know how to do this in

    asked by Christie
  105. math

    Angle A=60° Angle B ? Angle C 90°

    asked by tara