# Questions Asked onJuly 30, 2012

1. ## Chemistry

If the rate of formation of ammonia is 0.345 M/s, what is the rate of disappearance of N2? 1/2N2(g)+3/2H2(g)-->NH3(g) a. 0.173 M/s b. 0.345 M/s c. 0.690 M/s d. 245 M/s e. 0.518 M/s

2. ## Chemistry

Given the following data, determine the rate constant of the reaction 2NO(g) + Cl2(g) 2NOCl(g) Experiment [NO] (M) [Cl2] (M) Rate (M/s) 1 0.0300 0.0100 3.4 x 10–4 2 0.0150 0.0100 8.5 x 10–5 3 0.0150 0.0400 3.4 x 10–4 a. 1.13 M –2s–1 b. 9.44 M

3. ## physics

The area shown is the boundary of a magnetic ﬁeld directed in the positive z direction. An electron with a velocity along the x-axis enters the ﬁeld at coordinates (x, y) = (−2 m, 0) and exits 0.35 µs later at point A whose coordinates are (x, y) =

4. ## physics

An automobile starts from rest and 110 ft attains a speed of 30 mi/h. In what time has it traveled this distance and the is the acceleration?

5. ## physics

a uniform pole 20 ft. long weighing 80 lbs is supported by a boy 2 ft. from end a and a man 5 ft. from end b. at what point should a load of 100 lbs be placed so that the man will support twice as much as the boy?

6. ## Chemistry

Which of the following is an oxidation-reduction (redox) reaction? A. 2K(s) + 2H2O(l) → 2KOH(aq) + H2(g) B. 2NaN3(g) → 2Na(g) + 3N2(g) C. 4NH3(g) + 5O2(g) → 4NO(g) + 6H2O(g) D. Fe(s) + Ni(NO3)2(aq) → Fe(NO3)2(aq) + Ni(s) E. all of the above

7. ## Math

How much tolnaftate powder is in 7% Eucerin cream 85g? _______________

8. ## Chemistry

Calculate DeltaS0 for the formation of 1 mol of HI(g) from its elements given the following information: S0[H2(g)] = 131 J/mol∙K S0[I2(s)] = 116 J/mol∙K S0[HI(g)] = 206 J/mol∙K. A) 82 J/K B) 165 J/K C) 247 J/K D) 329 J/K

9. ## Pharmacy Math

If you diluted 95ml of a 7% benzocaine lotion to 5% how much could you produce? ___

10. ## geometry

A room is 11ft by 21ft and it needs painted. The ceiling is 8ft above the floor. There are two windows in the room, each is 3ft by 4ft. The door is 2.5ft by 6.5ft. a)Find the area the walls and ceiling to be painted. b)One gallon of paint covers 72.63 sq

11. ## Chemistry

Indicate which of the following has the highest entropy at 298 K. 0.5 g of HCN 1 mol of HCN 2 kg of HCN 2 mol of HCN All of the above have the same entropy at 298 K.

12. ## Chemistry

If 1 mol of ice melts at its melting point of 273 K, the entropy change for the ice is 22.0 J/K. If the ice melts in someone’s hand at 34°C, what is the change in the entropy of the universe? Assume a final temperature for the water of 0°C. The

13. ## statistics

In a time-use study, 20 randomly selected managers were found to spend a mean of 2.40 hours each day on paperwork. The standard deviation of the the 20 scores is 1.30. Also, the sample data appear to have a bell-shaped distribution. Construct the 95%

14. ## Chemistry

The standard molar entropy of lead(II) bromide (PbBr2) is 161 J/mol • K. What is the entropy of 2.45 g of PbBr2? a. +1.07 J/K b. –1.07 J/K c. +161 J/K d. –161 J/K e. 0 J/K

15. ## Chemistry

What is the overall standard free-energy change for the following two reactions? A + B-->2C äG = äG1 C + D-->E äG = äG2 a)äG1 + äG2 b)äG1 + 2äG2 c)äG2 – äG1 d)2äG2 – äG1 e)äG1äG22

16. ## english

Identify the simple predicate in the following sentence. Our basketball team will play against Wilson High School on Friday night.

17. ## Physics

An ac generator supplies an rms voltage of 5.00 {\rm V} to an RL circuit. At a frequency of 21.0{\rm kHz} the rms current in the circuit is 45.0 {\rm mA}; at a frequency of 26.0{\rm kHz} the rms current is 40.0 {\rm mA}. Find value of L an R ?

18. ## Chemistry

. In a biochemical reaction, A + B-->C with äG = 30 kJ/mol. Which of the following reactions might be effectively coupled to this reaction so that it becomes more spontaneous? I. C + D are the reactants, and B + E are the products äG = -40 kJ/mol II. C +

19. ## statistics

In a time-use study, 20 randomly selected managers were found to spend a mean of 2.40 hours each day on paperwork. The standard deviation of the the 20 scores is 1.30. Also, the sample data appear to have a bell-shaped distribution. Construct the 95%

20. ## sat math

At a certain hospital, 89 children were born in the month of June. If more children were born on the fifteenth of June than on any other day in June, what is the least number of children that could have been born on the fifteenth of June? The number of

21. ## Chemistry

Heat transfer from the system to the surroundings has a large effect on äSsurr ___________. a. when the temperature of the surroundings is low. b. when the temperature of the surroundings is high. c. when the temperature of the system is low. d. when the

22. ## physics

1.The potiential energy of a particle varies with distance x from a fixed origin as v=A√x/x+B where A and B are constants.Find the dimensions of AB. 2.The refractive index of a material is given by the equation ʯ=A+B/ʎsquare where A and B are

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23. ## statistics

The National Center for Education surveyed 4400 college graduates about the lengths of time required to earn their bachelor's degrees. The sample mean is 5.15 years, and assume that standard deviation is known to be 1.68 years. Based on the sample data,

24. ## Pharmacy Math

If you diluted 95ml of a 7% benzocaine lotion to 5% how much could you produce? ___

25. ## Chemistry

8. The usual partial pressure of oxygen that people get at sea level is 0.20 Atm., that is, a fifth of the usual sea level air pressure. People used to 1 Atm. air pressure begin to become "light-headed" at about 0.10 Atm oxygen. As a rule of thumb, the air

26. ## Chemistry

How much ethanol C2H50H in liters d=0.789g/ml must be dissolved in water to produce 190.5 of 1.65M c2H50H ? Molarity problem. Who helps me to solve it for me. My calculation 0.789g/ml x 1000ml/46.06 = 17.12M 17.12M = 190.5 x 1.65 17.12M = 314.325 x=

27. ## Pharmacy Technician

If you diluted 95ml of a 7% benzocaine lotion to 5%, how much could you produce? _________

28. ## physics

a train starts from rest ad at the end of 90° seconds has a speed of 10km/h. What is the acceleration?

29. ## algebra

The perimeter of a square field is yards. How long is each side?

30. ## Calc

A paper cup is to be designed in the shape of a right circular cone. It must have a capacity of 12 fluid ounces (1 fluid ounce = 1.80469 cubic inches) of soft drink but it must use a minimum amount of material in its construction. What should the

31. ## Chemistry

For which reaction is delta Ssys > 0? A) CH4(g) + 2 O2(g) ¨ CO2(g) + 2 H2O(l) B) NH3(g) + HCl(g) ¨ NH4Cl(s) C) 2 NH4NO3(s) ¨ 2 N2(g) + O2(g) + 4 H2O(g) D) HCl(aq) + NaOH(aq) ¨ NaCl(aq) + H2O(l)

32. ## Chemistry

If at a certain instant during the course of the reaction 2 NO2(g) + F2(g) ¨ 2 NO2F(g), the rate of formation of the product were 0.16 mol/L∙s, how fast would the F2 be disappearing (also in mol/L∙s) at that same instant in time? A) 0.16 mol/L∙s

33. ## human resources

1. An example of internally aligning HR practices is: a. implementing an employee dress code that increases customer satisfaction. b. creating a recruitment plan that targets the predominate groups in the organizations labor market. c. implementing a

34. ## math

an open box is to be made from a square piece,of material 24cm on a side by cutting equal squares from each cover and turning up the sides.express the volume of the box as a function of x.what is the domain of this function?

35. ## Chemistry

What is the entropy change to the surroundings when 1 mol of ice melts in someone’s hand if the hand temperature is 32°C? Assume a final temperature for the water of 0°C. The heat of fusion of ice is 6.01 kJ/mol. a. –188 J/K d. b. –22.0 J/K c.

40. ## physics

An automobile starts from rest and 110 ft attains a speed of 30 mi/h. In what time has it traveled this distance and the is the acceleration? -when is the acceleration of the object positive and negative?

41. ## physics

Two Carts have a perfectly inelastic collision. Cart A has mass 47.2 kg and velocity 6.33 m/s directed north immediately before the collision. Cart B has mass 41.1 kg and velocity 4.4 m/s directed west immediately before the collision. What is the speed of

42. ## Dynamics

A stone is thrown vertically upward from the top of a 30m high building with a velocity of 15m/s. Taking the acceleration of stone as 9.81 m/s2. And taking that as constant, determine a) the velocity v and elevations sy of stone above the ground at any

43. ## math

A ball is thrown vertically upward with a velocities of 18 m/s. Two seconds later another ball is thrown upwards with a velocity of 13.5 m/s. At what position above the ground will they meet?

44. ## Maths B - Population Growth

The population P of a particular city, Metropia, is growing at a rate proportional to the current population. The population at time t years is modelled by the equation P=¡¼Ae¡½^kt where A and k are constants. With the aid of appropriate examples,

45. ## college physics

A 565 N mountain climber moves across a rope strung across a canyon. When she is more than halfway across, she notices the rope makes a 10.0 degree angle (from horizontal) behind her and a 25.0 degree angle (from horizontal) ahead of her. What are the

46. ## Cosumer math

Monthly rent: $309 Security deposit:$100 Utility deposit: $60 Phone installation:$38 Initial charges:

47. ## math

What is the probability that a randomly selected three-digit number has the property that one digit is equal to the product of the other two? Express your answer as a common fraction.

48. ## Physics

A Football player on team a is movin gat a velocity of 8ms at an angle of 49 below the x axis. He collides with a player on team B, The Player B is moving at 7.5ms at an angle of 41 below the X and has a mass of 110KG after the collision both players

49. ## math

find the remainder when 13^16 + 17^12 is divided by 221.

50. ## bond

Assume an investor with 5 years investment horizon is considering purchasing a 7 years 6% coupon selling at par. The investor expects to reinvest the coupon at 5% and that the bond will be selling to offer a yield to maturity of 4% in five years. What is

51. ## Earth Science

I need help with the following Lab due tonight, 7/30/12, as I feel completely lost and would appreciate the help. The lab goes as follows: Design an experiment that illustrates the determination of the density of a cylindrical object found in the Lab Kit.

52. ## A&P

If your metabolic consumption of oxygen is 1500ml/min, what is the P02 of venous blood?

53. ## geometry

Alex plots 4 points K, L, M, and N. He joins points K and L and points M and N with straight lines as shown. Alex made the following statements about the points. Statement 1: and intersect on the same plane. Statement 2: and intersect at point P. Which

54. ## Pharmacy Math

How much stock solution of hydrogen peroxide 8% will you need to make 320ml of hydrogen peroxide 2% solution? ____

55. ## maths

solve the word problem (rates per kg) 1) Mary buys 7 kg peaches,and 5 kg bananas . what is the totala cost? 2)Sarah buys 1kg apple for herself and another 1 kg grapes for her brother . she also buys 2 kg peaches . what is the total cost?

56. ## chemistry

If 35.7{\rm mL} of 0.205{\rm M} {\rm KOH} is required to completely neutralize 20.0{\rm mL} of a {\rm HC_2H_3O_2} solution, what is the molarity of the acetic acid solution? {\rm HC_2H_3O_2}(aq) + {\rm KOH}(aq) \to {\rm KC_2H_3O_2}(aq) + {\rm H}_{2}{\rm

57. ## Dynamics

a 1500 kg automobile is traveling up to 20 degree incline at a speed of 6 m/s. if the driver wishes to stop his car in a distance of 5m, determine the frictional force at pavement which must be supplied by rear wheels

58. ## us history

for Leisler Rebellion, what happens in the end? I understand that Leisler and his son in law were arrested and then hanged for treason. But what happened after that? The goverment regain control? Also for Bacon's Rebellion, what also happens in the end

59. ## Chemistry

If you add 16g of sacicylic acid to 84g of an ointment base, what is the final concentration (w/w) the product? _______

60. ## geography

what mountain range prevent moisture from the summer monsoon winds from reaching the interior of the subcontinent?

61. ## American History

So were the Federalists considered the lesser party in contrast to the Jeffersonian-Republicans? What were the differences in their views?

62. ## Pharmacy Math

320ml of active ingredient is added to 680ml of an alcohol based solution. What is the final strength (v/v)? ___

63. ## Pharmacy Math

35ml of active ingredient is mixed with distilled water to total 300ml. What is the final concentration (v/v)? ____

64. ## Pharmacy Math

How much stock solution of hydrogen peroxide 8% will you need to make 320ml of hydrogen peroxide 2% solution? ____

65. ## Pharmacy Technician

35ml of active ingredient is mixed with distilled water to total 300ml. What is the final concentration (v/v)? ________

66. ## qbasic

how to print 2,5,11,20,32 to 200 and print its sum

67. ## Dynamics

The velocity of cylinder which is released from rest on degree incline after it has rolled through a distance 1 is given by____________

68. ## Dynamics

A ball is thrown vertically upward with a velocities of 18 m/s. Two seconds later another ball is thrown upwards with a velocity of 13.5 m/s. at what position above the ground will they meet?

69. ## Spanish

Que animal de la gusta

70. ## Algebra II

1 ) Find the inverse of g(x) = 5x -2 2) the graph (x-2)^2 + 3(y-2)^2 = 25 is graph of a(an) ______ 3) which equation has a vertex (5,- 4) a) y= (x+4)^2 - 5 c) y = (x-5)^2 -4 b) y = (x-4)^2 +5 d) y=(x+5)^2 -4 4) solve 8^x less than or equal to 25 5) name

71. ## math

johnny at 1/2 of a pizza, sue has 1/2 of another pizza, johnny said he ate more than sue, but sue says they both at the same amount, is johnny right?

72. ## chem.

what is the % v/v when 105 mL of alcohol are dissolved in enough water to give a 700 mL solution?

73. ## SCI 207

which of the following is not invovled in the study of source receptor relationship

74. ## Physics

A motorcycle stuntman must jump from a ramp to a platform. The platform is located 15M away and is 2M higher then the tip of the ramp. The ramp is at a 35Degree angle. At what velocity must he travel as he leaves the ramp in order to reach the platform.

75. ## phys

If your metabolic consumption of oxygen is 1500ml/min, what is the P02 of venous blood?

76. ## stats 101

how do you find the lower class limit,upper class limit, class width, class midpoint, and class boundaries from a set of frequencies data

77. ## math

How do I work out the problem 39 1/5+ 97+ 58 2/7

78. ## math

If Christopher wants to have the same number of hot dogs and buns, what is the minimum number of hot dogs he will have to buy?

79. ## chem

what volume of 1M NaOH is needed for the reaction with 1L of 1M HCl?

80. ## Chem

If your metabolic consumption of oxygen is 1500ml/min, what is the P02 of venous blood?

81. ## Penn

I need to write a paragraph why i choose medical billing. It has to have different experiences that motivate you to choose that field

82. ## math

Find the error. Sam is finding 9-6+2. Find his mistake and correct it. Steps: First solve the problem. Second, write a summary statement. Third, find Sam's mistake and explain in complete sentences.

83. ## COMM 215

When we drive in city traffic, you need to watch the traffic around your carefully. The choices are Pronoun shift in Number, Pronoun shift in Person, Ambiguous Reference, No Error. I picked Pronoun Shift in Person. Is this right?

84. ## pharmacy math

15g of potassium chloride is diluted in 2L of sterile water for injection. What is the final perccent strength (w/v)? ____

85. ## Alebra 2

If the system below were written as a matrix equation, by which matrix could you multiply both sides to obtain a solution? 4x + 6y = 24 5x + 8y = 40

86. ## Algebra 2 (again)

Find the value of y for which the equation below is true. |2x| |y + 7| |x | = |7 - 3y| 3, -3, 1, or 4

87. ## Pharmacy Math

15g of potassium chloride is diluted in 2L of sterile water for injection. What is the final perccent strength (w/v)? ____

88. ## Dynamics

A 1500 kg automobile is traveling upto 20 deg inclined at a speed of 6 m/sec. If the driver wishes to stop his car in a distance of 5m,determine the frictional force at pavement which must be supplied by rear wheels.

89. ## maths

1) 11kg 2)4kg

90. ## Inorganic Chemistry

1) 5.0 mL of 6.0 x 10^-4 potassium 5.0 mL of the solution prepared above are then mixed with

91. ## math

35 is what percentage of 175?

92. ## Maths

The population P of a particular city, Metropia, is growing at a rate proportional to the current population. The population at time t years is modelled by the equation P=Ae^kt where A and k are constants. With the aid of appropriate examples, explain how

93. ## Caculus:Integration Inverse Trig

integral of (4/(x times the square root of( x^2-1)) + (1+x+x^3)/(1+x^2)dx

94. ## programming

write a flowchart program which shows persentes of 4 student 1st 2nd 3rd 4th meximum nd minimum?

95. ## Calculus 1 Integration Trig Inverse

integral of (4/(x times the square root of (x^2-1)) + (1+x+x^3)/(1+x^2)dx

96. ## Spanish

If i knew the answer i wouldnt be asking the question! Is it a bat, bull. If nobody knows the answer just say instead of keep saying ive not dun it properly

97. ## writing

Im speech and psychology this semester in college. I will like to know if there is any websites that can help me with writing a good paper. Thank you in advance!

98. ## Algebra 2

Find the value of x for which the equation below is true. |5x - 2y| |18| |x + 6y|=|10| A.16 B.-1 C.4 D.1

99. ## SINGER

ARE AVREL LAVIGNE WAS DEATH?

100. ## math

Sarah jumped 18 1/2 feet in the long jump competition. Rachel jumped 19 1/8 feet. how much further did rachel jump?

101. ## English Literature

Does anyone know where i can read "Nervous Conditions", by Tsitsi Dangarembga, online?

102. ## math

Exactly how many digits are in 302627325(2^5300001+1)

103. ## math

What is the smallest number n such that n! ends in at least 1000 zeros in base 10 notation

104. ## chemistry

what is the volume of a sphere that has a radius, r = 3 in.

105. ## sci 207

new technologies for emissions reduction and air quality montoring are most likely born from what

106. ## Physiology

If barometric pressure is 480mmhg, what is the partial pressure of 02 in inspired air? At this pressure, what % of 02 would you have to gave in the air you are breathing so that the inspired p02 would be normal? ( 160 mmhg)

107. ## Physiology

If your blood pressure is 160/60, what is your total peripheral resistance?

109. ## math

If W(p)is congruent to 0(mod p), then p is a Wilson Prime. Show that 5 and 13 are Wilson Primes.

110. ## maths

give explanation of mean,mode,median & range.

111. ## futhermaths

A circle has its centre on the x-axis and passes through(4,1)and(1,5).find its equation.

112. ## Dynamics

A ball of mass 8 kg is thrown vertically upward from the ground , with an initially velocity of 25 m/s. Determine the maximum height to which it will travel if atmospheric resistance is neglected.

113. ## Dynamics

A flywheel has an angular speed of 1200 rev/min when its motor is turned off. The wheel attains constant decelerations of 1.5 rad/s2 due to friction in its bearing. Determine the time required for the wheel to come to rest and the number of revolutions the

114. ## Algebra

Two men and two women- Elliot, Theo, Shelly and Tina are professionals who meet for a conference. One is a Dean of Students, one is a Director, one an Academic Advisor and one is an Instructor. The table is square. The instructor sat on Shelly’s left The

115. ## algebra

Use the distributive property to simplify the expression. -11(10+6)

116. ## math

Can you reduce the fraction 17/35.

117. ## Bio 207

If barometric pressure is 480mmhg, what is the partial pressure of 02 in inspired air? At this pressure, what % of 02 would you have to gave in the air you are breathing so that the inspired p02 would be normal? ( 160 mmhg)

118. ## COMM 215

The capitalized verb agrees with the subject: One of my friends LIKE this brand of coffee. It is True/False. I picked False.

119. ## algebra

add simply or fraction 5 3 4 ------ + -- + --- = 8 20 15

120. ## calculus

y=x^3=cx and y=ax^2+bx-1 have a common tangent at (-1,-4). find a, b, andc

121. ## math

Please simplify (-3)2(-3)2 + 22 * (5)(-1)

122. ## algebra

1/4x+ 1/5y=1 Find two solutions for the equation

123. ## Alg 2

Find the value of x for which the equation below is true. |5x - 2y| |18| |x + 6y| = |10| A.16 B.-1 C.4 D.1

124. ## Pharmacy Math

320ml of active ingredient is added to 680ml of an alcohol based solution. What is the final strength (v/v)? ___

125. ## Pharmacy Math

35ml of active ingredient is mixed with distilled water to total 300ml. What is the final concentration (v/v)? ____