Questions Asked on
July 8, 2012

  1. chem

    Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.150 M HClO(aq) with 0.150 M KOH(aq). The ionization constant for HClO is 4.0*10^-8 a)before addition of any KOH b)after addition of 25.0 mL of KOH c)after addition of 40.0 mL

    asked by quinn
  2. Physics

    You are explaining why astronauts feel weightless while orbiting in the space shuttle. Your friends respond that they thought gravity was just a lot weaker up there. Convince them and yourself that it isn't so by calculating the acceleration of gravity 248

    asked by Dan
  3. chemistry

    Strong base is dissolved in 665 mL of 0.400 M weak acid (Ka = 3.69 × 10-5) to make a buffer with a pH of 3.94. Assume that the volume remains constant when the base is added. HA(aq) + OH-(aq) -> H2O(l) + A-(aq) Calculate the pKa value of the acid and

    asked by craig
  4. stastics

    If 1.5% of the bolts made by an automotive factory are defective, what is the probability that in a shipment of 200 bolts, there are 6 defective bolts? Place your answer, rounded to four decimal places, in the blank.

    asked by jen
  5. CHEM

    A metal, M, of atomic mass 91 amu reacts with fluorine to form a salt that can be represented as MFx. In order to determine x and therefore the formula of the salt, a boiling point elevation experiment is performed. A 9.05-g sample of the salt is dissolved

    asked by John
  6. Stats

    What is the minimal sample size needed for a 99% confidence interval to have a maximal margin of error of 0.06 if there is no preliminary estimate for p?

    asked by Lynn
  7. Chemistry

    A certain amount of methane is burned. Using stoichiometry it is calculated that 18.85 g of carbon dioxide should be produced. Carried out in the lab, 16.34 g of carbon dioxide are actually produced. What is the theoretical yield of the reaction?

    asked by Abby Walker
  8. Physics

    Calculate the velocity of a satellite moving in a stable circular orbit about the Earth at a height of 2600 km.

    asked by Dani
  9. Chemistry

    If 150.0 g of butane (C4H10) gas are burned, how many grams of carbon dioxide gas will be produced? Report your answer to the nearest whole number and do not include units in your answer. Do not use scientific notation for your answer. This is a

    asked by Abby Walker
  10. Math

    Find the balance in the account. $2,500 principal earning 4%, compounded quarterly, after 4 years

    asked by Jason
  11. College Physics

    A charged cloud system produces an electric field in the air near Earth's surface. A particle of charge -2.1 x 10-9 C is acted on by a downward electrostatic force of 4.3 x 10-6 N when placed in this field. (a) What is the magnitude of the electric field?

    asked by Stephanie22-41
  12. MAth

    A sphere has a surface area of 28.26 in2. Find the diameter in inches, of the sphere. Use PI Question 2 What is the surface area, in square inches, of a sphere with radius 3.5 in.? Use Pi and round your answer to the nearest hundredth, if necessary.

    asked by Jessica
  13. Physics

    A string is wrapped around a pulley of radius .20m and momentum of inertia .40 kg•m^2. The string is pulled with a force of 28 N. what is the magnitude of the resulting angular acceleration? Can someone please go through the steps or at least guide me

    asked by hayley
  14. Physics

    A string is wrapped around a pulley of radius .20m and momentum of inertia .40 kg•m^2. The string is pulled with a force of 28 N. what is the magnitude of the resulting angular acceleration? Can someone please go through the steps or at least guide me

    asked by hayley
  15. Statistics

    What are the odds in favor of spinning a D on this spinner?

    asked by massie
  16. c++

    Plzzzzzzzzzzzz Help program that produces a bar chart showing the population growth of Prairieville, a small? Write a program that produces a bar chart showing the population growth of Prairieville, a small town in the Midwest, at 20 year intervals during

    asked by imran
  17. Chemistry

    The empirical formula for a compound with the molecular formula C6H12N2O4 is?

    asked by Stacey
  18. Statistics

    A class consists of 23 women and 83 men. If a student is randomly selected, what is the probability that the student is a woman?

    asked by massie
  19. Chem

    1.75 x 10^25 selenium atoms contains how many moles of selenium?

    asked by Lu
  20. Chemistry

    In the balanced equation for the combustion of CH3CH2OCH2OCH2OCH2CH3, the coefficient of the organic compound is... the coefficient of oxygen gas is… the coefficient of carbon dioxide gas is… the coefficient of liquid water is… hint: in case your

    asked by Abby Walker
  21. math

    a deep sea diving bell is being lowered at a constant rate. after 8 minutes, the bell is at a depth of 400 ft. after 40 minutes the bell is at a depth of 1700ft. use the ordered pairs (8,400) and (40,1700) to determine the average rate to lower the bell

    asked by chchch
  22. Physics

    Suppose the space shuttle is in orbit 430 km from the Earth's surface, and circles the Earth about once every 93.2 minutes. Find the centripetal acceleration of the space shuttle in its orbit. Express your answer in terms of g, the gravitational

    asked by Dave
  23. Chemistry

    In the balanced equation for the combustion of 2,2,4-trimethyloctane (C11H24), the coefficient of the organic compound is...the coefficient of oxygen gas is ...the coefficient of carbon dioxide gas is...and the coefficient of liquid water is.

    asked by Anonymous
  24. Integrated Math 1

    Which of the following quadratic equations have the solutions x = -3 and x = 5? A. -1/2(x+3)(x-5)=0 B. (x+3)(x-5)=0 C. (x-3)(x+5)=0 D. -1/2(x-3)(x+5)=0

    asked by Tifini
  25. Management

    Using your current work organization and a second organization in the same industry as the subject matter, research the elements of business, compare and contrast the two selected organizations, and prepare and APA formatted paper that: Analyzes the basic

    asked by Anonymous
  26. accounting 205

    A proprietor makes a cash withdrawal from the proprietorship. How does this affect the accounting equation? (Points : 1) This has no effect on assets, liabilities, or owner’s equity. Assets decrease; owner’s equity decreases. Assets increase;

    asked by bernagene
  27. Poetry/ Fiction

    In poetry and fition, the main reason for using vivid words is to. a. explain an idea b. create a mental image c. keep th reader guessing. d. illustrate the write's bia The purpose of loaded words in adv ertisements is to. a. create an image b. compare two

    asked by Rafi
  28. College Physics

    A point charge of 2.0 µC is at the center of a cubical Gaussian surface 60 cm on edge. What is the net electric flux through the surface?

    asked by Stephanie23-7
  29. College Physics

    Two particles are fixed to an x axis: particle 1 of charge -7.93 x 10-7 C is at the origin and particle 2 of charge +7.93 x 10-7 C is at x = 14.6 cm. Midway between the particles, what is the magnitude of the net electric field?

    asked by Stephanie22-4
  30. Physics

    A hollow sphere of radius 25 cm is rotating at 13 rad/ sec about an axis that passes through its center. The mass of the sphere is 3.8 kg. assuming a constant net torque is applied to the sphere, how much work is required to bring the sphere to a stop?

    asked by hayley
  31. Poetry

    Snow was quickly piling up on the ground. Wind howled through the trees. Karen wrapped a blanket around her and sighed as she watched te snow though her bedroom window. In this passage. you best infer that. a. karen is at home during a snowstorm b. Karen

    asked by Anonymous
  32. College Physics

    A uniformly charged conducting sphere of 1.3 m diameter has a surface charge density of 8.7 µC/m2. (a) Find the net charge in coulombs on the sphere. (b) What is the total electric flux leaving the surface of the sphere?

    asked by Stephanie23-17
  33. SCIENCE

    A worker drags a box of mass 20 kg across a smooth floor by pulling a rope tied to

    asked by HAMZA
  34. Principal of Finance

    The following information is available to you: travelers' checks = $1 million; coin and paper currency = $30 million; repurchase agree¬ ments and Eurodollars = $15 million; demand deposits = $25 million; retail money market mutual funds = $60 million;

    asked by Frances Collins
  35. chemistry

    Calculate the change in pH when 4.00 mL of 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution that is 0.100 M in NH3(aq) and 0.100 M in NH4Cl(aq). Delta pH=? Calculate the change in pH when 4.00 mL of 0.100 M NaOH(aq) is added to the original buffer

    asked by rachel
  36. algebra

    The rectangular floor of a shed has a length 4 feet longer than its width, and its area is 140 square feet. Let x be the width of the floor. (a) Write a quadratic equation whose solution gives the width of the floor. (b) Solve this equation.

    asked by bulatsu
  37. College Physics

    Two particles are fixed to an x axis: particle 1 of charge q1 = 2.22 x 10-8 C at x = 15.6 cm and particle 2 of charge q2 = -4.33q1 at x = 66.7 cm. At what coordinate on the x axis is the electric field produced by the particles equal to zero?

    asked by Stephanie22-11
  38. Science

    According to science, the fastest speed posssible for anything is the speed of light. The speed of light is about 186,000 mies per second. That means that in one minute, lighttravels 11,160,000 miles. The star nearest Earth is the Sun. It's about

    asked by Rafi
  39. Chemistry

    If 13.75 g of iron (III) nitrate react with an excess of ammonium sulfide, how many grams of iron (III) sulfide are produced? Report your answer to 2 sig figs

    asked by Stacey
  40. College Physics

    In Millikan's experiment, an oil drop of radius 1.75 ƒÊm and density 0.882 g/cm3 is suspended in chamber C (Fig. 22-14) when a downward electric field of 1.35 ~ 105 N/C is applied. Find the charge on the drop, in terms of e.

    asked by Stephanie22-39
  41. Math

    suppose that $5000 is invested in an account with APR of 12% compounded monthly. find the future value of the account in 5 years.

    asked by Abb
  42. College Physics

    In an electric field, the lines on the left have twice the separation as those on the right. (a) If the magnitude of the field at A (particle in the field with lesser separated lines) is 58 N/C, what is the magnitude of the force on a proton at A? (b) What

    asked by Stephanie22-2
  43. Physics

    Two larged size charged plate have a charged density of positive sigma and negative sigma. The resultant force on the proton located midway between them will be

    asked by Sourabh
  44. Chemistry

    Calculate the molecular weight (MW) of a compound with the molecular formula C5H4FeN4. Report your answer to the nearest whole number value and do not include units. For example, if the MW was 35.45 amu, you would report "35" as your answer.

    asked by Stacey
  45. Physics

    A hollow, thin-shelled cylinder of mass rolls along a horizontal surface with a translational speed of v. What percent of its total kinetic energy is translational?

    asked by Sherry
  46. calculus

    What are the critical numbers of the function: s(t)=3t^4+12t^3-6t^2

    asked by Jasmine
  47. Chemistry

    13.75 g of iron (III) nitrate react with an excess of ammonium sulfide, how many grams of iron (III) sulfide are produced

    asked by Abby Walker
  48. College Physics

    particle 1 of charge q1 = 5.80 pC and particle 2 of charge q2 = –6.90 pC are fixed at a distance d = 1.80 cm apart. In unit-vector notation, what is the net electric field at points (a)A [to the left of q1], (b)B [between q1 and q2], and (c)C [to the

    asked by Stephanie22-87
  49. History

    Explain why you feel that Canada getting her own constitution was an important step in her development as a nation and a good thing for Canadians.

    asked by Anonymous
  50. College Physics

    two charged particles are located on an x axis: -q = -4.80 × 10-19 C at x = -3.00 m and q = 4.80 × 10-19 C at x = 3.00 m. What are the (a)x- and (b)y- components of the net electric field produced at point P at y = 5.00 m?

    asked by Stephanie22-9
  51. College Physics

    An electron is released from rest at a perpendicular distance of 9.1 cm from a line of charge on a very long nonconducting rod. That charge is uniformly distributed, with 7.8 ìC per meter. What is the magnitude of the electron's initial acceleration?

    asked by Stephanie23-22
  52. Chemistry

    The empirical formula for a compound with the molecular formula C6H12N2O4 is:

    asked by Stacey
  53. Statistics

    Suppose that out of 15,351 convicts who escaped from U.S. prisons, only 7667 were recaptured. Let p represent the proportion of all escaped convicts who will eventually be recaptured. Find a point estimate for p. Round your answer to four decimal places.

    asked by Desperate
  54. computer

    If int main() { int a=1; int *p; how do the following statements differ 1) p=&a; 2) *p=&a; 3) p=a; 4) printf("%d",p); 5) printf("%d",*p); and what does int **a mean

    asked by Ray
  55. statistics

    Using the numerical data for your team project, conduct a two sample, two-tailed hypothesis test for the mean, with a 0.05 level of significance. Find and interpret each step. H0: H1: Test statistic = Critical value = p-value = Reject the null hypothesis

    asked by Anita
  56. math

    Maggie is getting ready for the one-mile race in June. The first day of practice she ran 1/3 of a mile; the second day she ran 1/2 mile; the third day she ran 5/8 of a mile. Which is closest to her total mileage for the three days?

    asked by Anonymous
  57. Chemistry

    This question was posted: At 22 °C an excess amount of a generic metal hydroxide M(OH)2, is mixed with pure water. The resulting equilibrium solution has a pH of 10.56. What is the Ksp of the compound at 22 °C? I have found my [OH-] concentration

    asked by jen
  58. Physics

    Three charges (q1 = 8.7 nC, q2 = -7.2 nC, and q3 = -4.8 nC) are at the corners of a square of side a = 9.2 cm, as shown in the picture. Determine the magnitude of the resultant electric force on each charge.

    asked by Rain
  59. Engineering Physics

    A 4kg box is compress 50 cm on a spring (k=100 N/m) and then slides across a horizontal floor. If (u=0.4) between the box and the floor 1) How much work is done by friction as the box comes to a stop? 2) Assuming the frictional force is constant, how far

    asked by Christine
  60. geometry

    Construct a truth table for (qvp)__> ~q

    asked by angela
  61. cjs/210

    Will someone please help me find a website to answer the following questions? What are the various functions of a police agency? Compare how the functions of a police agency differ at the federal, state, and local levels. What would happen if the various

    asked by Picaboo
  62. College Physics

    A square surface measures 4.4 mm on each side. It is immersed in a uniform electric field with magnitude E = 2100 N/C and with field lines at an angle of 35° with a normal to the surface. Take that normal to be "outward," as though the surface were one

    asked by Stephanie23-1
  63. Physics

    The car in front of you is driving 105 km/h on the highway. You pull out to pass the car travelling 114 km/h. Both cars are 2.7m long. You pull out when you are 10m behind the car in front of you and pull back in when you are 10m in front of the other car.

    asked by John
  64. English - Publishing

    If I self-publish my books (stories I wrote) then later on about maybe a year later (just saying) I decide to show my work to the world by REALLY publishing it like normal authors due by making copies can you do that???? and also if i am self-publishing it

    asked by Laruen
  65. Reading

    You can infer from the statement: Also like in soccer, the player cannot touch the ball with his/her hands to move the ball forward. In field hockey, however, a player may raise his/her hand in an open, flat position to stop the ball in the air as long as

    asked by Emma
  66. ashworth

    Which one of these auto expenses would be considered variable? A. Insurance premiums B. Vehicle registration renewal C. Gasoline D. Loan payments

    asked by NItra
  67. Question

    What type of careers is for to help teenagers with their problems???? like dating, friends trouble, family crises, etc. also do one of those careers work at hospitals???

    asked by Laruen
  68. PHYICAL

    \ For the vector A=2I+3J and B=I+J what is magnitude and direction of ( A-B).

    asked by bbbb
  69. Statistics

    Using the numerical data for your team project, conduct a two sample, two-tailed hypothesis test for the mean, with a 0.05 level of significance. Find and interpret each step. H0: H1: Test statistic = Critical value = p-value = Reject the null hypothesis

    asked by Anita
  70. statistics

    H0: ƒÊX = ƒÊY The mean (average) gas price in city X equals the mean (average) gas price in city Y during January 2012. H1: ƒÊX ‚ ƒÊY The mean (average) gas price in city X does not equal the mean (average) gas price in city Y during January

    asked by Anita
  71. Science

    Considering the amount of energy required to produce animal-based foods and goods, should humans change their habits so they consume products closer to the bottom of the food chain because it is more efficient?

    asked by April
  72. oraintation

    How will you apply what you learned in this Orientation Workshop to your educational, personal, or professional pursuits

    asked by mil
  73. economics

    people are more likely to vote....when?

    asked by elizabeth
  74. chemistry

    1. Expected phenotypic ratio of green to white progeny: _____:_____. Calculation of Expected Ratio (Frequency) = __________ = Total Number of (Color) Seedlings ÷ Total of All Seedlings.

    asked by Cato
  75. Science

    Table 1: Results of F1 Cross Observed Phenotypes of F2 Progeny # green plants = V # white plants = V Total # plants Petri Dish 1 > Petri Dish 2 > Total Observed Frequency of F2 Phenotype, Green:White = ______:______ Calculation of Observed Ratio

    asked by Cato
  76. Business

    How do you reference Microsoft clip art on a reference page? The preview of the pictures give limited information.

    asked by Chaseone
  77. Math

    please help find the equation of the line with the given properties. write the equation in slope intercept form if possible 1. contains (-5,6) and (4,8) 2. contains (-5,-4) and is parallel to x=5 3. contains (-7,8) and is perpendicular to y=-6 please show

    asked by chchch
  78. math

    Let p, q, and r be the following statements: P: Jamie is on the train. q: Sylvia is at the park. r: Nigel is in the car. Translate the following statement into English: ( ~ p Ë„ q) --> r

    asked by Anonymous
  79. reading

    What is the difference between instruct and inform? Im reading this field hickey article and it talks about the rules and where its played and also the equipment so I'm confused .

    asked by Amy
  80. Chenistry

    Punnett Square for F1 Cross ¨C Expected Genetic Outcomes F1 Parent, genes: _________ (student to fill in the blanks) ¡â alleles > ¡á alleles v F1 Parent, genes:__________ (student fill in blank)

    asked by Cato
  81. Outline

    Fill in the blanks(which are numbered ) with t given words: A. Obstruction B. Cannot use hands C. Rules D. Conclusion E. Shielding the ball ___36___ A. Number of players 1.Eleven to a side B. Touching the ball 1. __37___ 2. May use hand to drop ball a.

    asked by Amy
  82. INFORMl logic

    One of the disadvantage of using truth table is: it is difficult to keep the line straight, T;s are easy to confuse with F's . they grow exponttenally and become too large for complex arguments, they cannot distunigunish strong inductive arguments from

    asked by tina
  83. Math

    show that in general, each of the following is false if A, B, and C are whole numbers? 1. A/B = B/A 2. (A/B) / C = A / (B/C) 3. A / (B+C) = (A/B) + (A/C) 4. A / B is a whole numbe

    asked by Jagals
  84. PHYICAL

    \ A 100 N block is on rough horizontal surface. If a horizontal force F=40 N is applied and the block just start slide. What is the value of the static coefficient.

    asked by bbbb
  85. PHYICAL

    A force of 70N is applied on a 6kg box, if the frictional coefficient is 0.3 . What is the box acceleration.

    asked by bbbb
  86. PHYICAL

    Awoman of 75kg skis down a 50m high hill , the frictional force is not negligible her speed at the bottom of the hill is only 25m\sec, What is the work done by the frictional forces.

    asked by bbbb
  87. Integrated Math 1

    The parabolas y = -3x2 + 10x - 6 and y = -3x2 - 17x + 2 intersect at _____? A.the line y = 27x - 8. B. x=the square root of 2 over 3 and xthe -square root of 2 over 3. C. x=8/27. D. they do not intersect.

    asked by Tifini
  88. statistics

    Using the categorical data for your team project, conduct a two sample, two-tailed hypothesis test for the proportion, with a 0.05 level of significance. Find and interpret each step. H0: H1: Test statistic = Critical value = p-value = Reject the null

    asked by Anita
  89. English

    What does Obstruction mean in a sport?

    asked by Emma
  90. Science

    2. If 320 F2 offspring resulted from this F1 cross, how many would be green? White?

    asked by Cato
  91. CRITICAL THINKING

    How would you explain the relationship between clear writing and critical thinking? Can you think of times when your ability to think critically was influenced by the writing? What was the result?

    asked by April
  92. CRITICAL THINKING

    What are your thoughts about overthinking and under thinking?

    asked by Tony
  93. chemistry

    if you increased the temperature of a volume of air by four times while at the same time doubling the pressure, would the volume of the air increase or decrease? why?

    asked by jollie
  94. politics and governance

    please explain this article: The state shall protect and promote the right to health of the people and instill health consciousness among them.

    asked by mik00
  95. PHYICAL

    For the vector A=2I+3J B=I+J what is magnitude and direction of ( A-B).

    asked by bbbb
  96. Math

    Factorise 8x⁶+95x³+1

    asked by pranjal
  97. CJS/230

    Will someone please help me find a website to find the answer to the following questions? What is corrections accreditation? How does corrections accreditation affect the professional development of corrections officers? How can industry leaders plan for

    asked by Picaboo
  98. PHYICAL

    Awoman of 75kg skis down a 50m high hill , the frictional force is not negligible her speed at the bottom of the hill is only 25m\sec, What is the work done by the frictional forces

    asked by ale
  99. PHYICAL

    100 N block is on rough horizontal surface. If a horizontal force F=40 N is applied and the block just start slide. What is the value of the static coefficient.

    asked by a
  100. CRITICAL THINKING

    How do you apply critical thinking to someone's else writing?

    asked by Christian
  101. Grammar

    Is this right? Help me to stay organize. ( i think this is correct) OR Help me to stay organized.

    asked by Anonymous
  102. curriculum for early childhood education

    which of the following should be included in activities that are designed to develope a childs view of relationships in the real world? A. matching objects B. hopscotch C. number songs D. quilts

    asked by Anonymous
  103. microeconomics

    In the short run, if the price of gasoline falls by 30% what effect does this have on the supply & demand curve?

    asked by Sandra
  104. PHYICAL

    \ A Motorcycle slowed down to rest from avelocity of 10 m\sec while traveling 30 m. what is its average acceleration

    asked by bbbb
  105. account (urgent!!pls help)

    accounting question [prepare journal entries for the year end adjustment] A fire broke out in the office during the year. the insurance company agreed to pay compensation of $3000 to the company in December 2009.No entries for this compensation were made

    asked by michelle
  106. PHYICAL

    Awoman of 75kg skis down a 50m high hill , the frictional force is not negligible her speed at the bottom of the hill is only 25m\sec, What is the work done by the frictional forces.

    asked by alex
  107. Reading/Math

    Does the toe of a hockey stick varies in length, height, width or area?

    asked by Emma
  108. PHYICAL

    A 100 N block is on rough horizontal surface. If a horizontal force F=40 N is applied and the block just start slide. What is the value of the static coefficient.

    asked by a AL
  109. PHYICAL

    Awoman of 75kg skis down a 50m high hill , the frictional force is not negligible her speed at the bottom of the hill is only 25m\sec, What is the work done by the frictional forces.

    asked by a b
  110. environmental science

    Although most salamanders have four legs, the aquatic salamander shown below resembles an eel. It lacks hind limbs and has very tiny forelimbs. Propose a hypothesis to explain how limbless salamanders evolved according to Darwin's theory of natural

    asked by Missy
  111. geometry

    construct a truth table for (~p^q)__> p

    asked by angela
  112. PHYICAL

    Awoman of 75kg skis down a 50m high hill , the frictional force is not negligible her speed at the bottom of the hill is only 25m\sec, What is the work done by the frictional forces

    asked by bbbb
  113. Math

    Finally, the toe of the stick varies in : A. length B. height C. width D. Area

    asked by Amy
  114. algebra

    a – 6 = 2b a + b = 15

    asked by Keith
  115. PHYICAL

    A 100 N block is on rough horizontal surface. If a horizontal force F=40 N is applied and the block just start slide. What is the value of the static coefficient. My dear sir please help me in teaching my son and thank you very much

    asked by bbbb