Questions Asked on
July 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

    asked by Taylor
  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

    asked by Taylor
  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) =

    asked by jayren
  4. 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

    asked by kelly
  5. 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

    asked by Michael
  6. 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

    asked by skye
  7. Pharmacy Math

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

    asked by Betty
  8. english

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

    asked by brandon
  9. 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

    asked by Taylor
  10. 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

    asked by Rajan
  11. 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 +

    asked by Taylor
  12. 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

    asked by Anonymous
  13. 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

    asked by karen
  14. 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

    asked by Anonymous
  15. 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?

    asked by Anonymous
  16. 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

    asked by face
  17. math

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

    asked by Adam
  18. 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%

    asked by jamie
  19. 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.

    asked by Taylor
  20. 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

    asked by Taylor
  21. Chemistry

    A nine liter tank has 150 atmospheres of bromine in it at 27°C. What is the added mass of the tank due to the gas?

    asked by Reid
  22. chem

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

    asked by rick
  23. 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=

    asked by Fai
  24. 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?

    asked by Anonymous
  25. maths

    1) 11kg 2)4kg

    asked by aswin
  26. 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

    asked by Katheryn
  27. 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,

    asked by Nina
  28. math

    35 is what percentage of 175?

    asked by mary
  29. 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

    asked by Nina
  30. 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

    asked by Mike
  31. Caculus:Integration Inverse Trig

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

    asked by Pam
  32. 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

    asked by Anonymous
  33. programming

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

    asked by shalini sharan
  34. Pharmacy Technician

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

    asked by Betty
  35. qbasic

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

    asked by suraj
  36. Pharmacy Technician

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

    asked by Betty
  37. 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

    asked by Chris
  38. Dynamics

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

    asked by Tamil
  39. 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

    asked by DHilsath
  40. 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

    asked by skye
  41. 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?

    asked by DHilsath
  42. 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

    asked by Rebecca macdonald
  43. Spanish

    Que animal de la gusta

    asked by Rebecca macdonald
  44. 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 ?

    asked by AJ
  45. 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!

    asked by %%%Rena%%%
  46. 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

    asked by True
  47. 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

    asked by jo
  48. SINGER

    ARE AVREL LAVIGNE WAS DEATH?

    asked by RAM THAPA MAGAR
  49. 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

    asked by Bread
  50. math

    Alice Correa bought three yards of cloth to make a dress. The cloth was on sale for $1.93 per yard. How much did Alice pay for the cloth if the sales tax was 5 percent?

    asked by Anonymous
  51. 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,

    asked by kathy
  52. 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?

    asked by dylan
  53. 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%

    asked by vickie
  54. math

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

    asked by she
  55. Cosumer math

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

    asked by Dave
  56. Chemistry

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

    asked by Betty
  57. Math

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

    asked by Betty
  58. English 3

    In the sentence I gave Ellen and Jane the card, the word Jane can be replaced with the objective pronoun her. True

    asked by Amy
  59. 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?

    asked by zianna
  60. English Literature

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

    asked by Barbie
  61. chem.

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

    asked by cliff
  62. physics

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

    asked by zianna
  63. math

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

    asked by Jon
  64. 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?

    asked by zianna
  65. math

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

    asked by Jon
  66. 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.

    asked by grace
  67. chemistry

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

    asked by bryce
  68. SCI 207

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

    asked by Anonymous
  69. sci 207

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

    asked by Anonymous
  70. 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

    asked by Alex
  71. 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.

    asked by Alex
  72. 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)

    asked by Sharon
  73. Physiology

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

    asked by Sharon
  74. Physiology

    Calculate your plasma if your blood ph is 7.5

    asked by lynn
  75. phys

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

    asked by lynn
  76. math

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

    asked by Adam
  77. maths

    give explanation of mean,mode,median & range.

    asked by Anonymous
  78. 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

    asked by Reid
  79. 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)

    asked by Taylor
  80. 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

    asked by Taylor
  81. 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

    asked by Taylor
  82. 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.

    asked by Taylor
  83. 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

    asked by Taylor
  84. futhermaths

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

    asked by sholarity
  85. 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.

    asked by Rajan
  86. 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

    asked by Rajan
  87. 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

    asked by Taylor
  88. math

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

    asked by Anonymous
  89. 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

    asked by TIA
  90. 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

    asked by help me out it's urgent
  91. algebra

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

    asked by Shelby
  92. 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?

    asked by karla
  93. geography

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

    asked by history
  94. 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

    asked by ali
  95. math

    Can you reduce the fraction 17/35.

    asked by Anonymous
  96. 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)

    asked by Sharon
  97. math project.. PLEASE HELP!!

    The municipal swimming pool in Nicetown has three different ways of paying for individual open swimming. Evan is trying to decide which way to pay. • Early Pay: Pay $45 before Memorial Day; swim any number of days • Deposit Plus: $20 deposit plus $2.00

    asked by Morgan
  98. 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.

    asked by Joe
  99. Chem

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

    asked by Jimmy
  100. A&P

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

    asked by Jimmy
  101. 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.

    asked by Ann
  102. algebra

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

    asked by Teresa
  103. 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

    asked by Margaret
  104. American History

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

    asked by Claire
  105. 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.

    asked by Hannah
  106. calculus

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

    asked by help needed
  107. 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?

    asked by Ann
  108. math

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

    asked by beth
  109. algebra

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

    asked by mook
  110. pharmacy math

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

    asked by Jean
  111. Pharmacy Math

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

    asked by Jean
  112. 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

    asked by True
  113. 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

    asked by True
  114. algebra

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

    asked by tesa
  115. Pharmacy Math

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

    asked by Jean
  116. 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

    asked by True
  117. Pharmacy Math

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

    asked by Jean
  118. Pharmacy Math

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

    asked by Jean
  119. Pharmacy Math

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

    asked by Betty
  120. Pharmacy Math

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

    asked by Betty
  121. Pharmacy Math

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

    asked by Betty
  122. Physiology

    Why does a solution of Haemolysed red blood cells look clear instead of cloudy?

    asked by Natalie
  123. Pharmacy Math

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

    asked by Betty
  124. 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.

    asked by benny
  125. 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?

    asked by paramesh
  126. 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?

    asked by aiza saclolo
  127. Dynamics

    A pelton wheel attains its operating speed of 800 rev/min% determine constant angular acceleration of pelton wheel

    asked by benny