# Questions Asked onNovember 1, 2014

1. ## chemistry

Ima Chemist found the density of Freon-11 (CFCl3) to be 5.58 g/L under her experimental conditions. Her measurements showed that the density of an unknown gas was 4.38 g/L under the same conditions. What is the molar mass of the unknown?

2. ## chemestry

consider the reaction 2N2O(g) == O2(g)+2N2(g).which of the following will cause a shift in the equilibrium to the left?

3. ## College Chemistry

Please tell me what I did wrong on this problem: Given the equation Fe2O3(s)+3CO(g)→2Fe(s)+3CO2(g), Calculate the number of grams of CO that can react with 0.370kg of Fe2O3 Here's what I did: .370kg x 1000 = 370g of Fe2O3 370g/[(55.85 x 2) + (13 x 3)] =

4. ## Physics

A bowling ball encounters a 0.760 m vertical rise on the way back to the ball rack, as the drawing illustrates. Ignore frictional losses and assume that the mass of the ball is distributed uniformly. The translational speed of the ball is 5.40 m/s at the

5. ## Criminal Justice/Writing Search Warrants

When writing the description for the property you are going to search for, the description must be detailed: A. so the average person can distinguish among similar objects in the search. B. so that only the magistrate and investigator can discern the

6. ## math

In the ocean, there are areas where there are very few living things. _________________________ is the term that describes when this happens to a natural area.

asked by Help science

29. ## Maths

Sue and Mary agree to play the best of three games of badminton. They stop if either of them have won two games. Over a long period of time, Sue wins 4 games out of every 5 games they play. Find the probability that Sue will win the best of three. I have

30. ## Calculus

In 1907 Kennelly developed a simple formula for predicting an upper limit on the fastest time that humans could ever run distances from 100 yards to 10 miles. His formula given by t=.0588s^1.125 where s is the distance in meters and t is the time to run

31. ## Managerial Economics

Mirk Labs is a pharmaceutical company that currently enjoys a patent monopoly in Europe, Canada, and the U.S. on Zatab, an allergy medication. The global demand for Zatab is Qd= 15.0- 0.2 P where Qd is annual quantity demanded (in millions of units) of

asked by Da One
32. ## MATH

POINT A AND POINT B ARE 5 UNITS APART .THE COORDINATES OF POINT A ARE (3,-9).THE y COORDINATES OF POINT B IS -9 .WHAT IS A POSSIBLE X-COORDINATE FOR POINT B?

33. ## Math Help

1.) Use the graph of f to describe the transformation that yields the graph of g. f(x)=10^x g(x)= 10^-x+3 a.) Reflect the graph of f in the y-axis and shift three units to the left. b.) Reflect the graph of f in the y-axis and shift three units to the

34. ## physical eduaction

what can potentially have the most impact on physical education outcomes other than class size? a .type of equipment used b. amount of equipment available c. attitude of the classroom teacher d. lack of funding for equipment

35. ## sda high

A population has a mean of 200 and a standard deviation of 50. Suppose a simple random sample of size 100 is selected and is used to estimate μ. What is the probability that the sample mean will be within 5 of the population mean?

36. ## MATH

Fraction form 1/3 if changed Decimal form it is 1/3=0.331/3 if changed to Percent form it is 1/3=331/3% Is this correct? I just want make sure.

37. ## Algebra 2

A player throws a ball up and toward a wall that is 17 feet high. The height h in feet of the ball after t seconds after it leaves the player's hand is modeled by h=-16t^2+25t+6. If the ball makes it to where the wall is, will it go over the wall or hit

38. ## physics, math

A hot air balloon with a mass of 18.0 kg is accelerating upward at 1.80 m/s^2 (Anet = 1.80 m/s^2). What is the weight and buoyant force acting on the balloon?

39. ## Math

If the correct answer is 7.52609, which of the following entries would be counted as correct? That is, which entries are withing Webassigns default tolerance? select all that apply. 7.4 7.3680 7.53 7.458 7.68 7.5938

40. ## calculus

Suppose the volume, V , of a spherical tumour with a radius of r = 2 cm uniformly grows at a rate of dV/dt= 0.3 cm^3/day where t is the time in days. At what rate is the surface area of the tumour increasing? The volume of a sphere is given by V =4

41. ## Physics

You swing a 2.40kg stone in a circle, using the full length of a thin 60.0cm rope.

42. ## Physics

1.71 kg of glass (ρ = 2.66 x 10^3 kg/m3) is shaped into a hollow spherical shell that just barely floats in water. What are the (a) outer and (b) inner radii of the shell? Do not assume the shell is thin. Volume = 2.66 * 10^3/1.71 V=1555.56 m^3 V=pi(r^2)h

43. ## statistics

31% of a certain breed of rabbits are born with long hair. What is the probability that in a litter of 8 rabbits, exactly 5 will have long hair? (Give your answer correct to three decimal places.)

44. ## chemistry

magnesium metal (1.00 mol) and a volume of aqueous hydrochloric acid that contains .500 mol of HCL are combined and react to completion. how many liters of hydrogen gas, measured at STP, are produced? Mg(s) + 2HCL(aq) -> MgCl2(aq) + H2(g)

45. ## Criminal Justice/Report Writing

When a violent crime is committed, the investigating officer will attempt to determine the suspect's method of operation. This should be recorded in which face sheet section? A. M.O., or modus operandi B. M.E., or method of entry C. Method of escape D.

46. ## Math

There h horizontal lines and v vertical lines drawn in a plane. There are r ways to choose four lines such that a rectangular region is enclosed. Given that r is divisible by 1001. Find the minimum value of h+v. I am really not sure where to start.

47. ## MATHS

Each Sunday the hymns to be sung are displayed on a hymn-board using numbered cards. The cards have the digits 0 to 9 on them. The hymn book has 750 hymns in it. Three different hymns are sung each service. a) What is the smallest number of cards the

48. ## Algebra

If P(x)=4+2sqrt(x+2) and G(x)=4-3X, then what is the largest constant such that P(G(a)) is defined? Thank you!

asked by Trish Goal
49. ## math

find the distance between the points (-20,16) and (-15,19). also find the midpoint of the segment that joins the points. what is the distance?_____ what is the midpoint?______

50. ## Chem

An e−1 is released by an electron microscope at 3.00 × 106 m/s. Determine  in meters using the de Broglie relation Substitute kgˑm2/s2 for J and show all units. Then, convert  to pm and show the conversion factor. Determine the kinetic energy

51. ## physics

A dart is thrown horizontally toward X at 30 m/s as shown. It hits Y 0.29 s later. The distance XY in centimeters is:

52. ## chemistry

Complete the following reactions, where applicable. If no reaction occurs write N.R A) blank + blank ---> Cu(NO3)2 + PbSO4 B) C6H12O6 + O2 --> blank + blank C) AgNO3 + CuCI2 ---> blank + blank

53. ## algebra

of 320 consumers polled, some purchase Blu-ray movies, some purchase movies on DVD, and some do both. If 300 people polled purchase Blu-ray discs and 280 purchase DVD's and Blu-ray discs, how many people only buy DVD's?

54. ## Math

Jane grows several varieties of plants in a rectangular-shaped garden. She uses fencing to divide the garden into 16 squares that are each 1 m by 1 m. She also puts fencing around the perimeter of the garden. What should the dimensions of the garden be so

55. ## Thermodynamic

The equilibrium constant of a reaction is determined at 2 different temperatures: at -181°C, Keq = 2770 at -11°C, Keq = 640

56. ## Strayer

A certain test is worth 125 points. How many points (rounded to the nearest point) are needed to obtain a score of 85%?

57. ## computer programing

You are to write a short C program. The program will input two numbers: 1) number of miles to ship a package, 2) and the weight of the package You are to computer the price to ship the package. The formula is as follows. If the weight of the package is

58. ## HISTORY

In the mid-nineteenth century new waves of immigrants came to the United States, most of them from ___ and ___. Northern & Western Europe?

59. ## physics

An m=150 g block hits an M= 265 g block initially at rest on a horizontal surface. After impact they stick together and slide 7.47 m before coming to rest. The coefficient of friction between blocks and surface is 0.39. a) What is in m/s the speed of both

60. ## English

Bill didn't wear gloves as he made a snowman. => His hands got very cold. ------------------------------ In the first sentence, what does 'as' mean? Does 'as' mean 'when' or 'because'?

61. ## Science

What is the term use to study the satellite television instruction experiment?

62. ## Maths

The 4th term of an AP is 6 if d sum of d 8th and 9th term is -72 the common difference is

63. ## Chem

I am still having problems this question 2. Review Examples 7.3 and 7.4, as well as the equation for E in the chapter notes. Suppose an e−1 in an H atom has a transition from n = 3 to n = 2. a. Determine the energy (E) of the released photon. b.

64. ## Physics

A car is traveling along a road, and its engine is turning over with an angular velocity of +190 rad/s. The driver steps on the accelerator, and in a time of 13.0 s the angular velocity increases to +300 rad/s. (a) What would have been the angular

65. ## UOP

a bond that has a $1000 par value (face value) and a contract or coupon interest rate of 10.9%. The bonds have a current value of$1,120 and will mature in 10 years. The firm's marginal tax rate is 34%. The cost of capital from this bond debt is what

66. ## Statistics

I have all the data, I just need someone to tell me how to start xc Please! I've been working on this for 5 hours now! 8. Calculate the equation of the least squares regression line. Draw this line on your scatter plot. The point (x,y) should lie on the

67. ## Math

Jane grows several varieties of plants in a rectangular-shaped garden. She uses fencing to divide the garden into 16 squares that are each 1 m by 1 m. She also puts fencing around the perimeter of the garden. What should the dimensions of the garden be so

68. ## Algebra

8-6i / 3i 3i / 4+2i I = imaginary numbers

69. ## criminal justice

how each player in the criminal justice system impacts the decision-making process.

86. ## Algebra

If x & y = the following table what is the function of x? x = 1,2,3,4 Y = 1,3,5,7

87. ## social

what is hwang ho civilization ?

88. ## research topic child development

I was reading a story earlier this evening, and I was wondering whether one detail could have been inspired by real life. Has anyone ever studied which parenting styles are most likely to lead to kids later having bad behavior?

89. ## English

Dogs have helped blind people for many years. They are not only helper animals. ---------------------------- Is the expression 'helper animals' correct? Do you have other expressions for that?

90. ## Chemistry

Calculate the solubility of Kcl2 in mole per dm cube of water at 90 dgree celcius if 10grams of the solute will saturate 20grams of water

91. ## engineering

should my calculated bulk modulus of a liquid be (-)? the lookup tables i'm comparing the results too have positive values, or is it written without the (-) as a negative bulk modulus is impossible?

92. ## Physics

Three particles X, Y, and Z of masses 2 kg, 5 kg, and 4 kg respectively are arranged in order along a straight line. Y is 5.0 m from X and 7.0 m from Z. The distance of the centre of mass of the system of mass from X is? ANS: 6.6 m Help please? I don't

93. ## Algebra

Define a#b as the arithmetic mean of a and b. What is the value of ((1#2)#2)#4? Express your answer as a common fraction. The hashtag is just a sign. Thank you!

asked by Trish Goal
94. ## Math

Find the linear approximation of f(x)=ln x at x=1 and use it to estimate ln 1.12. L(x)= ? ln 1.12 \approx ?

95. ## science

what is scorpius

96. ## math

what **1/8 means?.

97. ## College Intermediate Algebra

The base of a triangle is terms of x is 2x+4x+2 and the height is x2+3x-4. What is the area of the triangle. I need to know am if I'm on the right track Area=1/2(2x+4x+2) (x2+3x-4)

98. ## MATH: Need help please

Find the linear approximation of f(x)=\ln x at x=1 and use it to estimate ln 1.12. L(x)= . ln 1.12 approx

99. ## Chemistry

Suppose 55.3 L of a gas is at a temperature of -73. °C. If its temperature is increased to 411. °C, what will its volume be then?

100. ## Calculus

The blood alcohol concentration after a drink has been consumed can be modelled by c(t)=(0.02t)e^(−0.05t) where t is the time in minutes elapsed after the consumption of the drink and c(t) is the concentration in mg/mL at t. At what time in the first

5/6=1/3-x

102. ## st xaviers matj

Construct a square ABCD whose AC-AB=3cm

103. ## Intermediate Algebra

factor (x-3)^2 +10(x-30)+24

104. ## algebra

factor (x-3)^2 +10(x-30)+24

105. ## college algebra

(x-3)^2+10x-30+24

106. ## College Intermediate Algebra

(x-3)^2 + [10x-30] +24

107. ## AP Calc. AB

If f(x)=2x+sin(x) and the function g is the inverse of f, then g'(2)=?? a. 0.40 b. 0.38 c. 0.34 d. 0.32 e. 0.36