1. Algebra 8th grade please help!!!!!!

    Using the numbers 5, 8, and 24, create a problem using no more than four operations (addition, subtraction, multiplication, division, square, square root, cube, cube root) where the solution will be an irrational number. Explain why the result of your

    asked by April :) on November 13, 2012
  2. Math, algebra!! Please help!!!!!!

    Using the numbers 5, 8, and 24, create a problem using no more than four operations (addition, subtraction, multiplication, division, square, square root, cube, cube root) where the solution will be an irrational number. Explain why the result of your

    asked by Jessica on November 13, 2012
  3. Algebra II

    A restaurant sells about 330 sandwiches each day at a price of $6 each. For each $.25 decrease in price, 15 more sandwiches are sold per day. How much should the restaurant charge to maximize daily revenue? Explain each step of your solution. What is the

    asked by Mo on December 17, 2014
  4. math

    Using the numbers 5, 8, and 24, create a problem using no more than four operations (addition, subtraction, multiplication, division, square, square root, cube, cube root) where the solution will be an irrational number. Explain why the result of your

    asked by someone unknown on November 7, 2012
  5. Chemistry 32

    HCI (aq) is a strong acid. suppose you dissolved 0.0365 grams of HCI in water to give a final volume of 10.0 mL. what is the pH of this final solution. The molar mass of HCU is 36.5g /mole and the molar mass of water is 18.0g/mole

    asked by jen on March 12, 2014
  6. Chemistry

    Consider the process where 1.3 moles of ice, initially at -30.0 C, is heated to 140.0 C at constant pressure of 1.00 atm. The molar heat capacities (Cp) for solid, liquid, and gaseous water (37.5 J K-1 mol-1, 75.3 J K-1 mol-1, 36.4 J K-1 mol-1,

    asked by Bryan Josten on January 30, 2014
  7. Chemistry

    Consider the process where 1.3 moles of ice, initially at -30.0 C, is heated to 140.0 C at constant pressure of 1.00 atm. The molar heat capacities (Cp) for solid, liquid, and gaseous water (37.5 J K-1 mol-1, 75.3 J K-1 mol-1, 36.4 J K-1 mol-1,

    asked by Bryan Josten on January 31, 2014
  8. math

    The length of a side of a square is fifteen less than four times the length of a side of a second square. The perimeter of the two squares differ by 24 inches. Find in inches, the length of a side of the smaller square. [ Only an algebraic solution will be

    asked by vincent on July 27, 2013
  9. Calculus

    Find the point on the line 6x + y = 9 that is closest to the point (-3,1). Solution: We need to minimize the function d = sqrt((x − (−3))^2 + (y − 1)^2) = sqrt((x + 3)^2 + (y − 1) ^2 ) and, since the point (x, y) lies on the line 6x + y = 9, we can

    asked by Manny on December 9, 2009
  10. chemistry

    6.25 L of a propanoic acid-propanoate buffer must be prepared. The pH of the buffer needs to be 5.05. The solution will be 0.120M in propanoic acid. If the propanoate ion comes from the strontium propionate Sr(C3H5O2)2 then how many grams of strontium

    asked by Studious on March 1, 2013
  11. chemistry

    When the reaction is run in a buffer solution, however, it is pseudo-first-order in CH3I. rate = k[CH3] What is the half-life of this reaction in a pH 10.00 buffer if the pseudo-first-order rate constant for this reaction is 7.3 x10-9 s-1?

    asked by anglo on June 5, 2009
  12. Chemistry

    The boiling point of pure water in Winter Park, CO ( elev. 9000 ft) is 94 oC. What is the boiling point of a solution containing 11.3 g of glucose (180 g/mol) in 55 mL of water in Winter Park? Kb for water = 0.512°C/m.

    asked by JPR on October 11, 2015
  13. chemistry equilibrium

    In a 0.10 M solution of glutaric acid, HO2C(CH2)3CO2H (K1 = 4.6 ´ 10-5, K2 = 3.9 ´ 10-6), the species present in the next to highest concentration is A. H3O+(aq). B. HO2C(CH2)3CO2H(aq). C. HO2C(CH2)3COO-(aq). D. -O2C(CH2)3COO-(aq). E. OH-(aq).

    asked by jake on June 20, 2010
  14. chemistry

    What is the molarity of a solution 12.5 naoh dissolved in total volume of 625ml? NaOH = 12.5/molar mass of NaOH = 12.5/39.99 = 0.313 molarity = no.of moles/volume in L = 0.313/0.625 = 0.501 moles/L

    asked by sarah on April 13, 2015
  15. Trigonometry (Law of Sine)

    Fire towers A and B are located 10 miles apart. They use the direction of the other tower as 0°. Rangers at fire tower A spots a fire at 42°, and rangers at fire tower B spot the same fire at 64°. How far from tower A is the fire to the nearest tenth of

    asked by Alianne on February 25, 2012
  16. ENG 101

    Im taking my first college class in ENG 101 and i need to write an persuasive essay and Im having a hard time. I was wondering if anyone can help me come up with an outline or what I reasons that I can provide and I can come up with minor details. Here is

    asked by Jillian on December 2, 2011
  17. Science

    You may have to decide a second theme be sure to show a variety of examples (plant, animal, and other kingdoms) from a variety of smaller habitats within your ecosystem. explain how your examples fit the extreme theme. this is ecology. Thank you for using

    asked by Nikki on January 8, 2007
  18. chemistry 116

    The thermite reaction demonstrated in class requires high temperatures to start the reaction. A simple open flame is not enough to start the reaction. Once the reaction is going, then it generates enough heat to keep the reaction going. According to the

    asked by danny on January 28, 2015
  19. Project Management

    you are to prepare a network diagram using the Activity on the Arrow technique. You must use as many concurrent activities as you can and you must show the critical path. (A network diagram with no concurrent activities will result in no grade points being

    asked by Courtney on June 19, 2009
  20. chemistry(check my work)

    If 6.01 g of K2SO3 dissolved in 930 mL of water reacts stoichiometrically according to the balanced equation in a reaction solution with a total volume of 990 mL, what is the molarity (M) of KCl produced? K2SO3(aq) + 2 HCl(aq) → SO2(g) + 2KCl(aq) +

    asked by eng on April 3, 2010
  21. physics

    A flock of ducks is trying to migrate south for the winter, but they keep being blown off course by a wind blowing from the west at 6.0m/s. A wise elder duck finally realizes that the solution is to fly at an angle to the wind. If the ducks can fly at

    asked by Angela on October 11, 2009
  22. chemistry

    Chloroacetic acid has a relatively large equilibrium constant, so at low acid concentrations it is necessary to use the quadratic equation in order to calculate the concentrations of the aqueous species. Ka for ClCH2COOH is 1.4 ´ 10-3. For the problems

    asked by khin on May 13, 2010
  23. classroom instruction

    • Write a 200- to 300-word response describing how you might teach this concept to students in a lower elementary grade and to students in a middle school grade. i picked problem solving i have this so far. i guess for each grade level (elem and middle

    asked by scooby on March 19, 2010
  24. chemistry

    A common way of producing hydrogen gas in the lab is by reacting zinc with hydrochloric acid. Zn (s) + 2 HCl (aq) -> ZnCl2 (aq) + H2 (g) A sample of impure zinc, of mass 5.10g, reacted with an excess of hydrochloric acid solution 3.0 mol dm-3

    asked by Lois on November 17, 2016
  25. essay info help

    i'm doing an argument essay on why power plants should be shut down my college is like ten miles away from this power plant so it a very big issue in my town and i want to argue against power plants. i wrote down all my arguements, but i need help coming

    asked by julie on October 30, 2007
  26. Algebra

    The Occupational Safety and health Administration (OSHA) estblished permissible sound exposures in the work-place. This is modeled by the equation: S=-2.817H + 108.9 Use the formula for the problem: S=maximun permissible sound level in decibels H=number of

    asked by G on February 8, 2008
  27. History

    Marcus Whitman chose a site among the cayuse, for from the Nez Perce who requested his services. Analyze how Marcus Whitman's selection of the Waiilatpu mission site revealed something of his character and future work? Explain Explain how settlers

    asked by rosalin on June 5, 2018
  28. Algebra

    The Occupational Safety and health Administration (OSHA) estblished permissible sound exposures in the work-place. This is modeled by the equation: S=-2.817H + 108.9 Use the formula for the problem: S=maximun permissible sound level in decibels H=number of

    asked by G on February 8, 2008
  29. Chemical thermodynamics

    An iron balls is drop into a congrats floor from a height of 10m. On the first rebouce it rises to 0.5m. Assume that all the macroscopic mechanical energy lost in cotillion with the floor goes into the ball and that specific heat capacity of is

    asked by Kunoun on July 21, 2017
  30. Phyics

    The radius of Earth is 6.37 103 km. Find the speed, in km/h, resulting from the rotation of Earth, of a person standing on the equator. v=2(pi)(r)/T v=2(pi)(6.37e3)/24 v=1.67e3 km/h how would you convert this to m/s. it does not seem to be working for me

    asked by Jayd on August 16, 2007
  31. Physics

    A 56.6kg hiker starts at an elevation of 1270m and climbs to the top of a 2660 peak. (I know the answers to B and C, I just have a question on A) A) What is the change in the hikers potential energy? I took PE=mg(h2-h1) and got

    asked by Elisabeth on June 5, 2010
  32. science

    the question says assume the valencies of hydrogen, nitrogen and carbon in the compounds are 1, 3 and 4 from this i must draw a structural formulae for hydrogen cyanide and cyanogen that are consistant with these valencies. please help H : C::: N: Does

    asked by Mark jones on February 27, 2007
  33. Art

    Please check my work i am in connecus and i can’t add in the pictures but if possible can someone check this. This picture is called “ the wounded foot” and it’s by Joaquin sorolla y Bastida and I really hope someone can check this answer thanks In

    asked by Maria on December 7, 2017
  34. ENGLISH-COM 155

    Do I have five adverbs and five adjectioves in this paragraph? When I got my first white car, I was very excited! My mother and father often feared that I would default on my loan, which I did. I was not very experienced, and did not do my homework like I

    asked by Mariah Adams on August 17, 2011
  35. Probability.

    Sorry for posting so many topics, but I really need help on this stuff. I recently lost my work I did on a separate sheet from 2 weeks ago, and now I can't seem to find the answer again. a fair six-sided die is tossed seven times in a row. A) What is the

    asked by Tom on May 22, 2008
  36. Test tomm. Need help *Urgent*

    Sorry for posting so many topics, but I really need help on this stuff. I recently lost my work I did on a separate sheet from 2 weeks ago, and now I can't seem to find the answer again. a fair six-sided die is tossed seven times in a row. A) What is the

    asked by Tom on May 21, 2008
  37. Statistics

    If someone will explain how to work these problems out, that'll help me a ton! A weight loss program claims their patients loose an average of 3 pounds during the first month of the program but a consumer group believes the number is higher than that. A

    asked by lviiii on May 10, 2016
  38. Math

    Can you check my work Please? Let N(t) be the number of bacteria after t days. Then N(t) = Pa^t for some constants P and a. Measurements indicate that N(4) = 5600 and N(8) = 362, 000 1. Write down the formula for N(t) using the rounded values of a and P.

    asked by Walt on February 14, 2012
  39. english

    was given an assignment to write a paragraph essay about the short story"'the sniper''. And Ialready started and i want you to check my work if am on the right track.I started by writing my general statement. iNTHE SHORT STORY ''tHE SNIPER'' the author

    asked by sewa on February 15, 2011
  40. english

    was given an assignment to write a paragraph essay about the short story"'the sniper''. And Ialready started and i want you to check my work if am on the right track.I started by writing my general statement. iNTHE SHORT STORY ''tHE SNIPER'' the author

    asked by sewa on February 15, 2011
  41. Easy (yet confusing) Algebra

    These problems are pretty easy, but confusing (as stated in the subject line). |2x+5|-x=10 |3x+4|-2x=11 I know there are supposed to be two answers for each problem, for the first problem I got 5 and for the second problem I got 7. I can't figure out the

    asked by Emily on April 11, 2007
  42. Scienece

    A student crystallized a compound from benzene and observed only a few crystals when the solution cooled to room temperature. To increase the yield of crystals, the students chilled the mixture in an ice-water bath. The chilling greatly increased the

    asked by Josaff on September 26, 2015
  43. Chemistry

    • A student crystallized a compound from benzene and observed only a few crystals when the solution cooled to room temperature. To increase the yield of crystals, the students chilled the mixture in an ice-water bath. The chilling greatly increased the

    asked by david on September 20, 2012
  44. algebra

    Company makes tire rims. Estimates the the profit, P, of selling x tire rims is given by: P= -0.01x^2 + 8x + 1500 Plugging in 1000 for P and solving, I get 400. Is that correct? b) find the number of rims that must be sold to maximize profit. plugging in

    asked by Nabil on October 11, 2011
  45. phys

    a 5 kg concrete block accelerates down a 34 degree slope at 4.2m/s^2. Find the coefficient of friction between the block and the slope. The net force along the slope that produces the acceleration is F = M g sin 34 - u M g cos 34 = M a where u is the

    asked by slien on June 19, 2006
  46. physics

    You are riding your bicycle directly away from a stationary source of sound and hear a frequency that is 2.5% lower than the emitted frequency. The speed of sound at the temperature that day is 339 m/s. What is your speed? f = f0(v + vo)/v. Here, vo is the

    asked by Coreen on April 30, 2007
  47. Probability (Pre-Calculus)

    A class is given a list of eight study problems from which five will be part of an upcoming exam. If a given student knows how to solve six of these problems, find the probability that the student will be able to answer: (a) all five questions on the exam.

    asked by Hailey on March 25, 2010
  48. 6th grade math

    Just wondering if you could check my answer to this question. Tell whether problem can be solved by using GCF or LCM. Then solve. Sean has 8inch pieces of toy train track and Ruth has 18 inch pieces of train track. How many of each piece would each child

    asked by Alex on September 9, 2013
  49. Physics HELP!

    At what minimum speed must a roller coaster be traveling when upside down at the top of a circle if the passengers are not to fall out? I'm having trouble understanding what it means by minimum speed. I know that at the top there are two forces, the force

    asked by James on December 25, 2010
  50. Algebra- is my answer right

    Charlie is going to rent a truck for one day. There are two companies he can choose from, and they have the following prices. Company A charges $127 and allows unlimited mileage. Company B has an initial fee of $55.00 and charges an additional $0.90 for

    asked by Rachal on February 5, 2011
  51. Physics

    An object with a mass of 12 kg slides 9 meters across a horizontal surface with a coefficient of kinetic friction of 0.22. For the duration of the slide an external force, F1, with a magnitude of 43 Newtons acts on the mass in the positive y direction

    asked by Chelsea on October 31, 2012
  52. Physics

    A 56.5kg, 2.4m uniform ladder leans against a frictionless wall. A 95.5kg person is standing up 0.8m from the bottom of the ladder. The ladder makes an angle of 57 degrees with the horizontal. The coefficient of static friction between th eladder and the

    asked by James on December 14, 2015
  53. Physics

    bob drop a rock from a height of 4.5 m. (the acceleration due to gravity is 9.8 m/s^2) 1.at s the initial speed of the rock 2. how long is the rock falling before it hits the ground c. what is the final speed of the rock? [I have trouble with c) My work:

    asked by Ash on December 1, 2014
  54. Physics

    An object with a mass of 12 kg slides 9 meters across a horizontal surface with a coefficient of kinetic friction of 0.22. For the duration of the slide an external force, F1, with a magnitude of 43 Newtons acts on the mass in the positive y direction

    asked by Chelsea on October 31, 2012
  55. accounting

    my question is if my work enviornment is consider working in a school. 1. Would this organization be considered a sole proprietorship, partnership, or corporation? My answer: I feel that it would be a corporations because it is dealing with the school

    asked by student ac on October 17, 2007
  56. Excel

    I have to create a payroll document for class using Excel and I am quite confused. Here is the parts that I am confused on. -I have to calculate the number of years the employees have been working for us, I believe the function I need to use is TODAY() but

    asked by Amanda on October 31, 2007
  57. statistics

    (Quiz 240 ) Stratified Sampling: The owner of a private food store is concerned about employee morale. She decides to survey the mangers and hourly employees to see if she can learn about work environment and job satisfaction. From the list of workers at

    asked by mary on March 26, 2012
  58. math lit

    The price of a apple increase from R2,40 to R3,72. What is the percentage increase in the price of the apple?? If an exam is 2 and a half hours long and its out of a total of 100 marks A)how many mintutes do you have in whic to complete the paper?? B) at

    asked by Khabo on March 13, 2012
  59. english 4 AP

    I have an essay due and I cannot really understand the topic im supposed to write about. Its about the novel "sense and sensibility" Many plays and novels that focus upon the courtship or marriage of a man and a woman include a second pair who help to

    asked by kaliegh on February 22, 2013
  60. PHYSICS PLEASE HELP !!!!!

    An object with a mass of 13 kg slides 5 meters across a horizontal surface with a coefficient of kinetic friction of 0.38. For the duration of the slide an external force, F1, acts on the mass in the positive y direction while another force, F2, has a

    asked by Amanda on October 27, 2011
  61. CHEMISTRY

    The enthalpy of solution of nitrous oxide (N2O) in water is -12 kJ/mol and its solubility at 20 oC and 1.00 atm is 0.121 g per 100. g of water. Calculate the molal solubility of nitrous oxide in water at 1.600 atm and 20 oC. Hint, first find Henry's law

    asked by Raoul on May 4, 2014
  62. CHEMISTRY

    The enthalpy of solution of nitrous oxide (N2O) in water is -12 kJ/mol and its solubility at 20 oC and 1.00 atm is 0.121 g per 100. g of water. Calculate the molal solubility of nitrous oxide in water at 1.600 atm and 20 oC. Hint, first find Henry's law

    asked by Raoul on May 4, 2014
  63. chemistry

    A bottle of rubbing alcohol (C3H7OH) from the store is a 70% solution by mass. Determine the total vapor pressure inside the closed bottle. The vapor pressure of the water at room temperature is 24mmHg; the vapor pressure of the volatile rubbing alcohol is

    asked by billy bob j on April 17, 2008
  64. chemistry

    The enthalpy of solution of nitrous oxide (N2O) in water is -12 kJ/mol and its solubility at 20 oC and 1.00 atm is 0.121 g per 100. g of water. Calculate the molal solubility of nitrous oxide in water at 1.600 atm and 20 oC. Hint, first find Henry's law

    asked by Raoul on May 3, 2014
  65. Chemistry

    The molal boiling-point constant for water is 0.51 degrees C/molal. The boiling point of a 1.00 molal solution of Ca(NO3)2 should be increased by: A.) exactly 1.53 or B.) Somewhat less than 1.53 This is how I worked the problem: Ca(NO3)2 dislocates into 3

    asked by Marcus on February 21, 2013
  66. Chemistry

    How would you solve this problem? C4H8(g)--> 2C2H4 Determine the order of the reaction and the rate constant based on the following pressures, which were recorded when the reaction was carried out 430 C in a constant volume vessel. Time (s) P(C4H8)(mmHg) 0

    asked by Jane on July 17, 2010
  67. Chemistry

    Consider the titration of 80.0 mL Ba(OH)2 by 0.400 M HCl. Calculate the pH of the resulting solution after the following volumes of HCl have been added. a.) 0.0 mL *Which molecular equation do I use? b.) 20.0mL Ba(OH)2__+2HCl_+=>+_BaCl2_+____2HOH 80.0

    asked by Summer on January 10, 2012
  68. math

    a liscence plate for a car must consist of a letter followed by two numbers. Each letter mus be an R, U or N. Each number must be a 2 or 6. Repetition of digits is permitted. Use the counting principle to determine the number of points in the sample.

    asked by Joyce on June 12, 2011
  69. chemistry

    Fe(s) + Cu^2+(aq)--> Fe^2+(aq) +Cu(s)(1) 2Fe(s) + 3Cu^2+(aq)--> 2Fe^3+(aq) +3Cu(s) (2) suppose that you use 1.110 g of Iron in this experiment what is the minimum volume of 1.0M of copper sulfate solution that you should add? Hint: since you don't know

    asked by cindy on September 17, 2007
  70. Chemistry

    Preperation of a standard solution of sodium carbonate and titration for the equation between hydrchloric acid and sodium carbonate How can i explain the key features of the periodic table relate to the conclusions of the above experiment, i need to

    asked by Paul on October 9, 2010
  71. SCIENCe

    1.name the componets of the respiratory system in the order incoming encounter them during breathing. 1.trachea,pharynx,larynx,alveoli,bronchi 2.bronchi,larynx,alveoli,trachea,pharynx 3.larynx,trachea,bronchi,pharynx,alveoli

    asked by Masey on December 12, 2017
  72. Math (Business)

    Using the average daily balance method and the information​ given, find the credit card finance charge for the month of August​ (31 days). The annual interest rate is​ 18%. July 31st (Balance) $590 August 5 (Charge) $90 August 9 (Payment)$560 August

    asked by Derek on February 18, 2017
  73. MATH (POST 2) Need Help Please

    Using the average daily balance method and the information​ given, find the credit card finance charge for the month of August​ (31 days). The annual interest rate is​ 18%. July 31st (Balance) $590 August 5 (Charge) $90 August 9 (Payment)$560 August

    asked by Derek on February 18, 2017
  74. chemistry

    Zinc combines with hydrochloric acid to form aqueous zinc chloride and hydrogen gas.  If 300.0 mL of a 0.150  M solution of HCl is allowed to react with excess zinc, how many moles of hydrogen gas would be produced? Part two: if this reaction happens at

    asked by Anonymous on March 6, 2012
  75. 4th grade math

    I have to make a table or list to solve these problems. 1. Tina and Bruce are each rolling a 1 to 6 number cube. They are looking for different ways to roll two factors whose product is greater than 14. How many different ways will they find? 2. Trenton

    asked by Danny on September 10, 2013
  76. Chemistry

    My mind is bleeding again. I am trying to figure out the molarity of acetic acid in Vinegar. We used a standard solution of .613 Molars of NaOH. We added 33.75mL of NaOH to completely titrate/neutralize 25mL of Vinegar and we're supposed to be able to

    asked by Casey on June 22, 2010
  77. Chemistry

    What is the pH of a solution that is .060M in potassium propionic and .085M in propionic acid? Ka=1.3E-5 for the acid. The answer is +4.73 but I don't know how to go about the problem. I thought that the potassium propionic was reacting with the acid to

    asked by Jonah on March 21, 2013
  78. chemistry

    Ethanol was used in the solutions to help dissolve the acetylsalicylic acid. Ethanol is slightly acidic, and will react with NaOH. Describe a blank correction experiment; i.e., what experiment you might do to determine how much NaOH reacts with the ethanol

    asked by Anonymous on January 8, 2011
  79. chemistry

    When weighing liquid ethanol, why do you have to place water in the beaker prior to adding the ethanol to that same beaker? We were told to make a to make a 0.40% (wt/vol) stock solution by weighing 400 mg of absolute ethanol into a tared beaker that

    asked by Anonymous on November 25, 2013
  80. chemistry

    calculate the freezing point of a solution of a 3.46g of a compound, X, in 160g of benzene. when a separate of X was vaporised, its density was found to be 3.27g/L at 116 degree Celsius and 773 torr. The freezing point of pure benzene is 5.45 degree

    asked by Temsgen on November 20, 2018
  81. PHYSIC

    125 g of dry ice (solid CO2) is dropped into a beaker containing 500 g of 66°C water. The dry ice converts directly to gas, leaving the solution. When the dry ice is gone, the final temperature of the water is 29°C. What is the heat of vaporization of

    asked by SERA on August 14, 2015
  82. Math Help or I fail

    1. What is the solution to negative Start Root 75 End Root to the nearest integer? (1 point) 9 8 -8 - My answer -9 2. Shelly sews a blanket that has an area of 170 square feet. It has 30 square blocks, each the same size. What is the approximate length of

    asked by Apple Pause on October 29, 2018
  83. Chemistry

    Buffer capacity is a measure of a buffer solution\'s resistance to changes in pH as strong acid or base is added. Suppose that you have 165 mL of a buffer that is 0.360 M in both benzoic acid (C6H5COOH) and its conjugate base (C6H5COO–). Calculate the

    asked by Brody on November 17, 2013
  84. Chemistry

    Buffer capacity is a measure of a buffer solution\'s resistance to changes in pH as strong acid or base is added. Suppose that you have 165 mL of a buffer that is 0.360 M in both benzoic acid (C6H5COOH) and its conjugate base (C6H5COO–). Calculate the

    asked by Brody on November 17, 2013
  85. Physics

    If a projectile is fired straight up at a speed of 10 m/s, the total time to return to its starting position is about ? -Hfinal=hinitial+ vinitial*t -4.9t^2 0=0+10t-4.9t^2 when I solved for t I got .49t.Am I suppose to plug .49t back into the equation? A

    asked by Jess on September 9, 2007
  86. Chem Problem

    I need help solving this question, I have no idea what I'm supposed to do. What is the minimum pressure in kPa that must be applied at 25 °C to obtain pure water by reverse osmosis from water that is 0.165 M in sodium chloride and 0.029 M in magnesium

    asked by Student on March 1, 2013
  87. Physics

    After school you have been working on your slingshotmanship. Interested in the physics of the slingshot, you take data that compares the force of the extended slingshot versus the displacement from equilibrium. You think this graph is very similar to that

    asked by Anonymous on December 1, 2016
  88. Chem Problem

    I need help solving this question, I have no idea what I'm supposed to do. What is the minimum pressure in kPa that must be applied at 25 °C to obtain pure water by reverse osmosis from water that is 0.165 M in sodium chloride and 0.029 M in magnesium

    asked by Student on March 1, 2013
  89. Physics

    I am really confused on the steps to solve this problem. This is my first time taking physics. The much needed help, would be strongly appreciated. a) Calculate the centripetal force exerted on a vehicle of mass m = 1630 kg that is moving at a speed of

    asked by Carlos on October 21, 2014
  90. Chemistry

    At a certain temperature, the solubility of gas in water at 2.04 is 48.0 . Calculate the solubility of gas in water, at the same temperature, if the partial pressure of gas over the solution is increased from 2.04 to 6.00 .

    asked by Sam on February 8, 2013
  91. chemistry hw question

    Magnesium hydroxide + hydrogen chloride-----> magnesium chloride + water How many grams of magnesium chloride can be produced from 14.60 mL of a 0.546M hydrogen chloride solution?

    asked by danielle on February 5, 2012
  92. English Ms. Sue

    How would I explain my reason fear can cause war because they might believe their is no other solution? How would I explain my reason fear can cause war because people naturally have an instinct to predict themselves with fear?

    asked by Michele on February 9, 2009
  93. science

    the solubility of sodium chloride in water at 10 degrees C is 32 g in 100 g of water. If 14 g of sodium chloride are dissolved in 50 g of water at 10 degrees, the solution is ___________.

    asked by ciarra on May 19, 2011
  94. Math

    A Woman has cat's and birds. When asked how many of each she has she answers... " I have between both cats and birds 400 feet and 232 eyes.(Cats have 4 feet and Birds have 2 feet) How Many Total? How many Birds? How many Cats? Please help me solve this.

    asked by Michelle on September 21, 2011
  95. English

    Please check my answer. I'm not sure which is right because I'm pretty sure every father feels the need to do all of the below. Read the following sentence from "No Dogs Bark." "I'll get you to Tonaya. There I'll find somebody to take care of you. They say

    asked by jaycee on September 15, 2014
  96. SS help

    In a traditional economy, how are economic decisions made? * 1 point custom and habit**** government leaders consumers and planners combination of consumers and planners 2. In a command economy, how are economic decisions made? * 1 point combination of

    asked by Haley on October 5, 2017
  97. Criminal Justice/White Collar Crime

    Excessive billing can take several forms. What are retainers? A. Patients paying directly for services such as calls, refills, and conferences that Medicare considers covered. B. Contracts for services that exceed Medicare limits. C. Up-front fees for

    asked by Pat on September 26, 2015
  98. Physics

    A hot-air balloonist, rising vertically with a constant velocity of magnitude v = 5.00 m/s, releases a sandbag at an instant when the balloon is a height h = 40.0 m above the ground. After it is released, the sandbag is in free fall. For the questions that

    asked by Karla on September 13, 2007
  99. Physics 1

    A hot-air balloonist, rising vertically with a constant velocity of magnitude v = 5.00 m/s, releases a sandbag at an instant when the balloon is a height h = 40.0 m above the ground. After it is released, the sandbag is in free fall. For the questions that

    asked by Douchan on September 13, 2007
  100. Physics

    James and Steve have a contest to see who can kick a football further. James kicks the football at an angle up of 57 degrees, and a speed of 75m/s. Steve kicks the ball with a speed of 100m/s, at an angle up of 48 degrees? Who wins the contest? Please show

    asked by Molly on June 21, 2011

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