# Questions Asked onOctober 15, 2011

1. ## chemistry

Calculate the mass of NO2 produced from the decomposition of copper nitrate if .462mol of oxygen are formed. The equation for the reaction is 2Cu(no3)2 - 2CuO + 4NO2 +O2

2. ## physics

Two ice skaters have masses m1 and m2 and are initially stationary. Their skates are identical. They push against one another, as in Figure 7.10, and move in opposite directions with different speeds. While they are pushing against each other, any kinetic

3. ## chemistry

Mass of tablet is 1.3183g, concentration of HCl 0.1807M, concentration of NaOH 0.1481M, volume of NaOH used 20.36 ml then milimoles of HCl added ?, milimoles of NaOH used ?

4. ## physics

A 4.63-g bullet is moving horizontally with a velocity of +349 m/s, where the sign + indicates that it is moving to the right (see part a of the drawing). The bullet is approaching two blocks resting on a horizontal frictionless surface. Air resistance is

5. ## statistics

a die is rolled 7 times. find the probability of getting at least one 3.

6. ## Poetry

Beyond tone, a poet's attitude toward his or her subject reveals to us a poem's A. subject. B. structure. C. diction. D. theme.

7. ## Social Studies 9

Similarities and Differences between lord protector and reign of terror. PLEASE I NEED HELP !!!!

8. ## calculus

If a snowball melts so that its surface area decreases at a rate of 4 cm2/min, find the rate at which the diameter decreases when the diameter is 9 cm.

9. ## physics

A block of mass 2kg placed on a long frictionless horizontal table is pulled horizontally by a constant force F. It is found to move 10 m in the first two seconds find the magnitude of F

Hi, Please advise on the following: - A procedure for the determination of Impurities A & B in a compound says to use a 4.6 x 150mm x 3um column (stationary phase: octadecylsilyl silica gel). The relative retention time with reference to the Principal Peak

11. ## nonfiction

Thoreau writes that people should be "mining themselves for gold." By this he is stating, in another way, the ideal of Socrates, which was to A. know thyself. B. deny thyself to learn what is valuable. C. live and let live. D. put first things first

12. ## owning

The __________spells out the new owner's repayment obligations when finacing a new or used vehicle. A.lone agrrement B.sticker C.buyer's guide D.loan application i got A

13. ## geometry

A square has side lengths of 4x - 3 and 2x - 5. What is the area of the square?

14. ## physics

The drawing shows a human figure approximately in a sitting position. For the purposes of this problem, there are three parts to the figure, and the center of mass of each one is shown in the drawing. These parts are: (1) the torso, neck, and head (total

15. ## cultural diversity

I already talked about skin tone and using IAT test to do a survey I need to know what other measurements sociologists utilize to calculate prejudice

16. ## owning

The __________is the contract that seals the deal when you buy a car. A.loan application B.warranty C.loan agreement D.sales agreement i got C

17. ## Physics 114

You are riding in a boat whose speed relative to the water is 7.2 m/s. The boat points at an angle of 25.7° upstream on a river flowing at 14.1 m/s. Find the time it takes for the boat to reach the opposite shore if the river is 24.5 m wide.

18. ## Physics

Relative to the center of the Earth, the position of the Moon can be approximated by (t) = r [cos (ωt) + sin (ωt) ], where r = 3.84 108 m and ω = 2.46 10-6 radians/s. (a) Find the magnitude and direction of the Moon's average velocity between t = 0 and

19. ## biology

A 28.0-g sample of ice at -18.0°C is mixed with 124.0 g of water at 85.0°C. Calculate the final temperature of the mixture assuming no heat loss to the surroundings. The heat capacities of H2O(s) and H2O(l) are 2.08 and 4.18 J/g · °C, respectively, and

20. ## chemistry

A 13.0-g sample of ice at -13.0°C is mixed with 105.0 g of water at 78.0°C. Calculate the final temperature of the mixture assuming no heat loss to the surroundings. The heat capacities of H2O(s) and H2O(l) are 2.08 and 4.18 J/g · °C, respectively, and

21. ## freefall

An airplane is dropping bales of hay to cattle stranded in a blizzard on the Great Plains. The pilot releases the bales at 160 {\rm m} above the level ground when the plane is flying at 70.0 {\rm m}/{\rm s} 60.0^\circ above the horizontal.How far in front

22. ## Biology (genetics)

The RAS protein acquires a mutation that prevents release of GTP. Which of the following characteristics are these cells likely to acquire? a)Self-sufficiency in growth signals b) insensitivity to anti growth signals c) angiogenesis d) metastasis e)

23. ## English

I've chosen five sentences but I hope the other were possible.Thank you. 1) What are people intolerant about (is "of" also possible)? They are intolerant about the color of the skin, religion and clothes. 2) In the past, she got hurt (is "offended"

24. ## science

what is the discharged rate of water leaking at a 4 inches diameter pvc pipe with pressure of 35 psi and a leak hole of 5 mm in diameter

25. ## physics

A cannon is used by the department of forestry to launch containers of fire retardant on to a fire. the cannon is at a distance of 1kilometre from a cliff that is 0.5kilometre high from the ground and the fire is 1kilometre away from the base of the cliff.

26. ## HELP-PROBLEM SOLVING IN MATHEMATICS

a piece of wire of length 136(pai) is cut to form 8 circles. the radius of the circles differ from each other, in sequence, by 1 cm. a) find the radius,r b) find the number of complete circles that can be formed if the original length of the wire is

27. ## QM

I have borrowed a sum of $150000 for buying house at 12% simple interest per year at the beginning of a year.The loan has to be repaid by three payment of$10000,$30000 and$X at the end of February, July and November of the same yaer respectively. Find

28. ## chemistry

A certain compound contains only vanadium and oxygen. A 35.00 g sample of the compound contains 19.61 g of vanadium. Determine the empirical formula of this compound.

29. ## physics

Two balls have the same mass of 0.525 kg and identical charges of 13.0 μC. They hang from the ceiling on strings of identical length as shown in the figure. If the angle with respect to the vertical of the strings is 22.0°, what is the length of the

30. ## physics

from short to long bondpaper

31. ## chemistry

what are the three modes of expression of percentage concentration?

32. ## history

The entrance to many Egyptian tombs was inscribed with a course or warning,designed to protect the tomb from raiders who might want to steal the treasures within.What would you write to warn off tomb raiders?

33. ## Epidimiology

In a hypothetical study, 1000 patients attending a hospital general outpatient department were tested for diabetes using the following two tests:  Fasting blood sugar (FBS)  Glucose tolerance test (GTT) There were 100 patients who had a positive GTT,

34. ## spanish

should I use desde, desde hace or hace in this sentence ------ poco compre un coche

35. ## English

I urgently need to know if the following sentences are all possible. Thank you. 1)I didn't know your address but I manged to/was able to/ (but not could) find you. 2) When I was young, I was able/could play the guitar quite well. 3) I called Mary many

36. ## Math

A piece of rope is cut into three pieces in the ratio 2:7:11. If the longest piece is 72cm longer than the shortest piece, find the length of the original rope. Ps: how do I do this type of question? What are the fixed steps?

37. ## physics

An object acted on by three forces moves with constant velocity. One force acting on the object is in the positive x direction and has a magnitude of 5.1 N; a second force has a magnitude of 4.3 N and points in the negative y direction. Find the direction

38. ## Math

Lee Holmes deposited $16,600 in a new savings account at 9% interest compounded semiannually. At the beginning of year 4, Lee deposits an additional$41,600 at 9% interest compounded semiannually. At the end of year 6, what is the balance in Lee’s

39. ## physics

When you push a 1.70 kg book resting on a tabletop it takes 2.60 N to start the book sliding. Once it is sliding, however, it takes only 1.50 N to keep the book moving with constant speed. What are the coefficients of static and kinetic friction between

40. ## Algebra 2

f(x)=x^3-7x^2+10x+6 (find the zeros of this quadratic equation)

41. ## Algebra 2

Describe the end behavior of the graph of the polynomial function. Then evaluate the function for x=-4, -3, -2, -1, 0, 1, 2, 3, 4. Then graph the function.y=x^4-2x^2-x-1 and y=(x-3)(x+1)(x+2)

42. ## physics

A 747 jetliner lands and begins to slow to a stop as it moves along the runway. The mass is 3.8 105 kg, its speed is 25.9 m/s, and the net braking force is 4.27 105 N.

43. ## film

Was Heather Duke smart in the movie Heathers

44. ## Algebra 2

Describe the end behavior of the graph of the polynomial function. Then evaluate the function for x=-4, -3, -2, -1, 0, 1, 2, 3, 4. Then graph the function. Number one: y=x^4-2x^2-x-1

46. ## social studies

who is the mayor of Susquehanna?

47. ## social studies

what is the population in Susquehanna?

48. ## social studies

what are the metropolitan area of Susquehanna?

49. ## social studies

what landmarks and attractions are in Susquehanna?

50. ## English

Could you check this sentence for me, please? Thank you. She offered/agreed/promised to drive me to the airport.

I am entering an essay scholarship and would love if some of you could proof read my essay. Thanks so much! Title: Be a Part of Something Greater “You have to get involved!” From the first day of school, freshman year of high school, those were the

52. ## Alegebra

In which quadrants could a point be located if its coordinates are reciprocals to each other

53. ## PHI103 Informal Logic

Assume Mary is forced to let her children go hungry or steal some food from a local grocery store. Which should she do? Construct an argument that supports Mary's decision to steal the food or an argument that shows why Mary should not steal the food.

54. ## Calculus (Discontinuity)

Suppose f(x) = [sin(x^2 - 4)]^ -1. Identify any points of discontinuity, and determine (giving reasons) if they are removable, infinite, or jump discontinuities. Okay, I presume that the [ ] brackets denote the greatest integer function (int () ). Once I

55. ## EEE

the solve of the shipment of 10 items has 2 items defective and 8 items are non defective.IN THE inspection of the shipment a sample of items will be selected and tested.if a defective items is found the shipment of 10 items will rejected.in a sample of 5

56. ## Stats

I. Use Chebyshev’s theorem to find what percent of the values will fall between 183 and 227 for a data set with a mean of 205 and standard deviation of 11. II. Use the Empirical Rule to find what two values 99.7% of the data will fall between for a data

57. ## Stats

A Math test has a mean of 51 and standard deviation of 5.0. Find the corresponding z scores for: I. a test score of 64 II. a test score of 47

58. ## Stats

Rank the following data in increasing order and find the position and value of the 56th percentile. Please show all of your work. 0 1 6 8 9 9 8 6 3 1 0 9

59. ## Stats

A set of 50 data values has a mean of 15 and a variance of 36. Find the standard score of a data value = 30

60. ## computer

suppose the 640GB western digital hard drive install in the RAID array has failed, find a replacement drive as close to this drive as possible. print three web pages showing the size, features and price of three possible replacement

61. ## law

An alternative to an hourly rate is a/an __________ rate. (Points: 5) cost advertised family fixed Is it "Fixed"

62. ## English

Please check for any errors in my paper. And crrect the errors for me. Let me know if there is anything I need to change. The Lottery takes place on a beautiful summer day in a small day in a small town.However, the the location of the town, is never

63. ## physics

When you push a 1.70 kg book resting on a tabletop it takes 2.60 N to start the book sliding. Once it is sliding, however, it takes only 1.50 N to keep the book moving with constant speed. What are the coefficients of static and kinetic friction between

64. ## Drama

The ability of writers to completely identify with their characters is A. hypocrisy. B. ambiguity. C. negative capability. D. satire.

65. ## physics

A spring with a force constant of 100 N/m is used to push a 0.27 kg block of wood against a wall, as shown in the figure.

asked by I have no clue
66. ## law

For an attorney, one of the most common negative aspects of the contingency fee is: (Points: 5) a. that the client may not pay him. b. the high degree of risk involved in the litigation. c. that the costs may be too high. d. that the judge may not grant

67. ## physics

A spring with a force constant of 100 N/m is used to push a 0.27 kg block of wood against a wall. (a) Find the minimum compression of the spring needed to keep the block from falling, given that the coefficient of static friction between the block and the

asked by I have no clue
68. ## law

The legal business is a __________ industry. (Points: 5) regulatory statutory service judicial is it "Statutory"

69. ## mirror images

Can someone please explain what mirror images to me in simple terms.

70. ## physics

a projectile is fired from the top of a building with an initial velocity straight upward at 40m/sec. the top of the building is 50 meters above the ground? a) the maximun height of the projectile above the building b) the time for the projectile to reach

71. ## Chemistry

Calculate your Kinetic Energy in Joules if you weigh50 kg and you are walking 2 meters/second. This is what I did: KE is Ek=1/2mv^2 So it would be Ek=1/2(50kg) x 2m/s Then I convert kg to pounds. There are .454kg in 1 lb so 50(.454)=22.7lbs

72. ## physics

a rock is thrown of a cliff with an horizontal velocity of 55.0 m/sec. it takes the rock 7.0 sec to hit the ground a) what is the height of the cliff. b)how far from the foot of the cliff does the rock hit the ground. c) what is the vertical component of

73. ## algebra

fidn all solutions to x^4 + 3x^2 = 4x^3 + 1

74. ## tanks

the weight of a elliptical tank

75. ## chemistry

Cumene is a compound containing only C and H that is used in the production of Phenol and acetone in industry. combustion of 47.6 mg cumene produce some CO2 and 42.80 mg water. the molar mass of cumene is between 115-125 g/mol. Determine the empirical and

76. ## algebra

invest $2,000, part earns 6% year and reh rest earned 11% year. Interest at end of year =$155. How much is invested at each rate?

77. ## algebra

open box made from 33 x 33 inch sheet of metal by cutting out x-inch square from each corner and folding up the sides. What size square should be cut out to produce a box of maximum volume? (This is algebra class)

78. ## physics

light travels at a constant speed of 3x10^11 centimeters/sec. how long does it take light to reach the earth a distance of 1.5x10^8 kilometers give your answer in seconds and minutes.

169. ## social studies

whats the holy book of islam

170. ## Chemistry

Hi Please help verify my answer to the following question: 0.500g of pure phosphorous was burned in excess pure oxygen to give a product that has a mass of 1.145 g. What is the empirical formula of the resulting compound? By the use of a mass spectrometer

171. ## english

mrs. sally johnson lives in dallas texass whats the capitalization?

172. ## calculus

Find the equation of the line that is tangent to the graph of: x^2cosy +5y^2=(1/4)x^2 , at the point (2π,π)

173. ## calculus

How to solve for "t" - step-by-step sqrt(2t-1) + sqrt(3t+3) = 5 Thank you very much.

174. ## Biology

What does it mean to say that two genes are "linked"? Can linked genes assort independently? Why or why not?

175. ## algebra

Considering the following equation: 4y + 7x = -23 I have to solve the equation for y, but I can't use mixed numbers in my answer.

176. ## Chemistry

you have 505mL of a .125 M HCl solution and you want to dilute it to exactly .100. How much water should you add? I got (.125M)(505mL)=(.100M)(Vf)= 631.25. But on my answer sheet they got 126 mL of H2O???? I don't know how she got it.

177. ## math

What are two equivalent fractions for 3/10 and 7/13 and 15/33?

178. ## english

what do you call a person who can not function with out a leader