1. ECONOMICS

    Sorry, the last Question didn't post Suppose Fred has a utility function of the form U = X ½ Y ½ . Fred has an income of $100, good X costs $1.00, and good Y costs $2.00. How much of good X and how much or good Y will Fred buy? Be sure to show all your

    asked by Brett on January 21, 2009
  2. 8-12 sentence paragraph

    I have to write these paragraphs for a writing assignment and just wasn't sure is I was doing it right. Need some advice!! ASSIGNMENT: You’ve applied for a specific job in your field of study. The Human Resources Department arranges an interview and

    asked by alma on March 21, 2012
  3. Science

    What is the main benefit of using scientific names instead of common names for organisms?   Scientific names have been around for much longer than common names have. Scientific names give everyone a shared terminology while common names can vary around

    asked by Anne on April 18, 2014
  4. Physics

    A bicycle wheel has a diameter of 47.6 cm and a mass of 0.809 kg. The bicycle is placed on a stationary stand on rollers and a resistive force of 60.1 N is applied to the rim of the tire. Assume all the mass of the wheel is concentrated on the outside

    asked by Youthers on January 27, 2015
  5. Neutons Thrid law

    3. A force of 36 N gives a mass m1 an acceleration of 4.0 m/s2. The same force gives a mass m2 an acceleration of 12 m/s2. What acceleration will this force give to m1 and m2 if the two masses are fastened together? {3.0 m/s2}

    asked by Jen on April 8, 2016
  6. Algebra 1 (Reiny or Kuai)

    Give the domain and range values of each relation. Tell whether the relation is a function. The x-values are -3, -2, -1, -2. The y-values are 9, 6, 3, 0. A: D: {-3, -2, -2}; R: {9, 6, 3, 0} No, this relation is not a function?

    asked by Anonymous on November 13, 2013
  7. Science

    A force of 400 N gives a mass (m1) an acceleration of 2 m/s^2. The same force gives another mass (m2) an acceleration of 13 m/s^2. What acceleration will this same force give if m1 and m2 are fastened together?

    asked by L on January 10, 2017
  8. Algebra 2

    1.) Write a system of equations that has NO solution. 2.) If you wanted to eliminate the y variables in the system of equations below, what would you multiply the first and second equations by?( Do not solve the equation) 2x-3y=8 7x-4y=11

    asked by Audrey on October 5, 2007
  9. math

    Find an equation for the ellipse that satisfies the given conditions. Length of major axis 6, length of minor axis 4, foci on y-axis

    asked by monic on November 10, 2012
  10. Math

    Write the slope intercept form fo an equation of the line that passes through the given point and has the given slope 1. Point (1,1) Slope 1/4 Formula y-y1=m(x-x1) Answer : y=1/4x+0

    asked by M on October 30, 2014
  11. Math - Solving for Trig Equations

    For the following equation, why cannot I not solve it? I keep getting an error. -- 2cosx - 3 = 0 -- I first isolated for "x" 2cosx-3 = 0 (2cosx/2) = (3/2) x = cos^-1(3/2) x = error? why? -- My textbook answer: 30 and 330 degrees --

    asked by Anonymous on November 22, 2007
  12. Chemistry

    What volume of hydrogen chloride gas will result when hydrogen gas is combined with 58.35 liters of chlorine gas? I need help balancing the equation also.

    asked by doll on March 3, 2012
  13. Chemistry

    5.6 x 10-6 mol of A and 5 x 10-5 mol of B are mixed in a 200 mL flask. The system is represented by the equation: 2A(g) + B(g) --> 3C(g) At equilibrium, there is 4.8 x 10-5 mol of B. Calculate the value of the equilibrium constant.

    asked by Sandra on May 11, 2012
  14. Math

    Answer check please: Consider the circle (x-3)^2 + (y+1)^2 = 169. The point (15,4) is on the circle. Find an equation for the line that is tangent to the circle at this point. I got y= 5/12x-9/4.

    asked by KC on August 26, 2012
  15. Math Final *Updated* Since no one knew what it was

    8. Suppose an investment of $5,000 doubles every 12 years. How much is the investment worth after 36 years? After 48 years? Write and solve an exponential equation

    asked by Name on March 14, 2018
  16. Chemistry

    Write a balanced chemical equation for nitrogen gas reacts with oxygen gas to produce nitrogen dioxide gas

    asked by Elizabeth on March 29, 2010
  17. Math

    True or false: If a is any positive real number, the graph of y=a^x will go through the point (0,1). True or false: x^3+2x^2 is an exponential equation because it contains exponents. I got true for both of them is that right?

    asked by Sam on November 25, 2015
  18. Calculus-math

    Find an equation of the line that is tangent tothe graph of f and parallel tothe given line. Function: 1/square root of x Line: x+2y-6=0

    asked by Anonymous on September 26, 2012
  19. Algebra 2

    Q: What is the value of b in the equation 4^2b-3 = 8^1-b? My Work/Answer: Set each sides base to 2 2^2(2b-3) = 2^3(1-b) cancelled bases out solved for b my answer - 9/7 Is my work and answer correct Thank You

    asked by Bryan on March 22, 2016
  20. math

    a cold front moves in at noon and in 5 hours, the temperature had dropped 23%. the temperature at 5:00 p.m. was 14%. let x be the temperature at noon. write an equation to find x.

    asked by anne on November 30, 2010
  21. Algebra 2

    1.) Write a system of equations that has NO solution. 2.) If you wanted to eliminate the y variables in the system of equations below, what would you multiply the first and second equations by?( Do not solve the equation) 2x-3y=8 7x-4y=11

    asked by Audrey on October 4, 2007
  22. Algebra 2

    1.) Write a system of equations that has NO solution. 2.) If you wanted to eliminate the y variables in the system of equations below, what would you multiply the first and second equations by?( Do not solve the equation) 2x-3y=8 7x-4y=11

    asked by Audrey on October 3, 2007
  23. math

    there are 40 jump ropes in the gym class. there are 4 times more red jump ropes than blue ropes. how many of each color are there? i can't seem to write the equation. help!!!!!!!! x+ 4x=40 5x=40 x=8

    asked by shawna on February 1, 2007
  24. ap calculus

    write the general form of the equation of the lines throught the point (a) parallel to the given line and (b) perpendicular to the given point point- (2,1) line- 4x-2y=3

    asked by kate on September 26, 2009
  25. math

    For which table(s) of values in Exercises 39–42 is the relationship linear? Tell how you decided. Write the equation for each linear relationship. x 5 10 15 20 25 30 y 20 30 40 50 50 50 I understand this is not linear function but what is it asking me to

    asked by Alex on April 20, 2010
  26. Math

    The voltage (in volts) induced in a coil of wire is v = (2t + 1)^0.5. The current in the coil is initially 0.3 amps, and the inductance is 5H. What is the equation for the current in the coil?

    asked by Anonymous on March 13, 2014
  27. math

    The voltage (in volts) induced in a coil of wire is v = (2t + 1)0.5. The current in the coil is initially 0.3 amps, and the inductance is 5H. What is the equation for the current in the coil?

    asked by Anonymous on March 12, 2014
  28. math

    The voltage (in volts) induced in a coil of wire is v = (2t + 1)^0.5. The current in the coil is initially 0.3 amps, and the inductance is 5H. What is the equation for the current in the coil?

    asked by Jacob on March 11, 2014
  29. Math

    Please let me know if I figured this out correctly. Directions: Find the slope of a line perpendicular to the graph of each equation. 1) y= -x/5 - 7 Answer: Slope = 5 2) 2x + 3y=5 Answer: Slope = 3/2 Thank you!

    asked by Kate on January 29, 2012
  30. maths

    you are at the music store looking for CDs. the store has CDs for $10 and $15. you have $55 to spend. write an equation that represents the different numbers of $10 and $15 CDs you can buy. hmm now.. how do i do this?

    asked by mia on October 18, 2009
  31. Math (2 of 4 question)

    8. Suppose an investment of $5,000 doubles every 12 years. How much is the investment worth after 36 years? After 48 years? Write and solve an exponential equation.

    asked by Name on March 14, 2018
  32. math

    The third and seventh terms of an arithmetic sequence are 10 and 20. 1) What is the value of the 1st term? 2) What is the value of the 9th term? 3) What is the equation to find the nth term in the sequence? HELP!! PLEASE!!

    asked by Brittany on February 2, 2011
  33. College Algebra

    Graph the equation in the standard window and in the given window. Determine which window better shows the shape of the graph and the x- and y- intercepts: y= -2x + 24 [-15,15, -10,30] Xscl =3 Yscl =5

    asked by Anonymous on August 31, 2011
  34. algebra

    how do you write and solve an equation to determine the radius of mars the radius of earth is 6378.1 km, which is 2981.1 km longer than the radius of mars

    asked by delisa on September 12, 2009
  35. College Algebra

    Suppose that the length of a rectangle is 3 inches longer than the width and that the perimeter of the rectangle is 78. Set up an equation involving only W, the width of the rectangle.

    asked by Nina on June 16, 2008
  36. Math

    All the seats in the theater are divided into 8 groups.There are 40 seats in each group.Write and solve a division equation to find how many seats there are in the theater.

    asked by Ashely on October 19, 2011
  37. Algebra

    Find an equation of the line containing pair of points (1/6, 1/3) and (5/6, 3) I can't seem to figure out the slope right, which apparently is 5. How does one get a five slope out of all these fractions?!!! To find the slope 3-1/3 = 8/3 over 5/6 - 1/6 =

    asked by Aria on May 29, 2011
  38. Math

    The sum of the squares of three consecutive whole numbers is 77. Form a quadratic equation and hence solve it to determine the numbers. (Hint: let the three consecutive numbers be x, x+1 and x+2)

    asked by Alyssa on December 7, 2014
  39. Chemistry

    For an H+ concentration, [H+], of 4.3 x 10-4 M, would this be acidic, neutral or basic? Why? I'm assuming that because it is an H+ it would be acidic and H+ means acidic and OH- means base. Is this correct? And is there a better formula for this equation?

    asked by Chris on November 29, 2014
  40. Calculus 3! ASAP please

    1.A given line is described by the system of equations x=2t+7; y=-3t+4; z=5-t; find the equation of a line parallel to the given line and which contains the point (1,1,0). 2.Let a= and b=, then the component of a parallel to b is given by? - the answer is

    asked by Sally on September 22, 2015
  41. math

    Points A and B lie on the graph of the equation y = -4.3x. What are the y coordinates for each point? Point A: (-3, ) Point B: (5, ) Not multiple choice.. confused on how to find the other points

    asked by Anonymous on October 23, 2014
  42. PLEASE HELP CHEM!!

    5.6 x 10-6 mol of A and 5 x 10-5 mol of B are mixed in a 200 mL flask. The system is represented by the equation: 2A(G) + B(G) 3C(G) At equilibrium, there is 4.8 x 10-5 mol of B. Calculate the value of the equilibrium constant.

    asked by scilover on April 21, 2013
  43. Statistics

    Suppose that the probability distribution of a random variable x can be described by the formula P(x) = x/15 For each of the values x = 1, 2, 3, 4, and 5. For examples, then, p(x=2) = p(2) = 2/15 a Write out the probability distribution of x. b Show that

    asked by Chinadoll on October 26, 2009
  44. Philosophy

    a) Using long or short truth tables (symbolize as necessary and show tables) determine and state whether the following argument is valid, briefly explaining your table; and b) if valid, demonstrate validity by deductions using Group I rules. Arg If Peter

    asked by Anne on December 14, 2006
  45. physics

    A ball is kicked from ground level so thta is intiial velocityis 10ms-1 AT AN angleof 60 degrees above the horizontal. It hits a wall which is at a distance of 8m from the initial position of the ball a)show that the ballhits the wall 1.6s after it was

    asked by 0ooooooooo0 on September 28, 2017
  46. maths-parallelogram

    A farmer had a plot in the shape of a parallelogram. He divided into three equal parts, each of which was a separate parallelogram. He then gave his son one-third of the land. The son, who realized that the district in which he lived had no school, decided

    asked by anoynomous on March 11, 2013
  47. Math 7th grade

    1) of the dolls in mo's doll collection, 1/5 have red hair. of these 3/4 have green eyes. what fraction of Mo's dolls collection have both red hair and green eyes? 2) ( Use measurement conversions) find 1/2 of 1/4 of a gallon. 3) Cheryl is organizing her

    asked by catalina on October 1, 2012
  48. math

    a particle M oscillators (that is, moves back and forth) in a straight line along the horizontal axis. the position of M is given by: s(t) = 4 + 2 sin(2t) (1) Find the velocity (v) and acceleration (a) functions. (2) Find the initial position, initial

    asked by memo on August 13, 2011
  49. statistics

    Use the list and calculation method to answer the following questions. Show your work at each step. 4. You draw three cards (with replacement) from a standard deck of cards. What is the probability that a. exactly one will be red: .125 + .125 + .125 = .375

    asked by Lynn on June 7, 2013
  50. Chemistry :(

    Given that: 2Al(s)+(3/2)O2(g)--->Al2O3(s) change in H(rxn)= -1601 kJ/mol 2Fe(s)+(3/2)O2(g)--->Fe2O3(s) change in H(rxn)= -821 kJ/mol Calculate the standard enthalpy change for the following reaction: 2Al(s)+Fe2O3(s)--->2Fe(s)+Al2O3(s) _______kJ PLEASE

    asked by Lucy on October 31, 2010
  51. Math

    Please show your work thanks for your help. Eric works in a factory where he earns $9.24 an hour. He receives time and a half for over time and double time for work on Sunday. He worked 52 hours this week , with eight hours of overtime and four hours on

    asked by Anonymous on November 9, 2007
  52. chemistry

    Please help me and show me step by step. assume that the reactions are being performed at pressure of 1.2 atm and a temperature of 298K Calcium carbonate decomposes at a high temperature to form carbon dioxide and calcium oxide. How many grams of calcium

    asked by Cris on May 9, 2010
  53. chemistry

    Methane reacts with an excess of chlorine gas. [it's an equation] I have the reactants: CH4(g) + Cl2(g) --> ? I was thinking single replacement, making CCl4 for sure. I'm just not sure about that hydrogen, unless it's just H2, and when balanced the full

    asked by anonymous on January 4, 2010
  54. math

    Assume that you make a down payment of $2000, and you finance the remainder with a five-year loan at 6.9 percent APR. 20092 total cost-2000 down payment=18092 interest=2.24$ What is the equation I need to use to figure out the monthly payments per $100?

    asked by crissy on December 27, 2016
  55. chemistry

    Based on the calculations above, which of the following equations is the one represented by this experiment? Justify your answer by comparing the moles of iron consumed and the moles of copper produced to the coefficients in the equation of your choice.

    asked by john on October 26, 2013
  56. Math

    A jewelry store is selling a set of 4 pairs of gemstone earrings for $58, including tax. Neva and three of her friends bought the set so each could have one pair of earrings. Write and solve a multiplication equation to fin how much each person should pay.

    asked by Mia on January 30, 2012
  57. Calculus Graph help!!!

    I need help with a calulus graph and figuring out its equation but it wont let me post the picture of the graphs here. so will someone who understands Calculus and their graphs super well please email me k m k underscore horse lover at hot mail dot com. no

    asked by kelsey on May 2, 2012
  58. Applied Science Chemistry

    A 0.5g mixture of Cu and CuO was treated with hydrogen at elevated temperature. CuO was reduced to Cu. Q1.) write a balanced equation for the reaction Q2.) before the experment, calculate the minimum amount in mole of hydrogen required to ensure the

    asked by Darth Chan on December 26, 2016
  59. chemistry 106

    Nitroglycerin, an explosive compound, decomposes according to the equation below. 4 C3H5(NO3)3(s) 12 CO2(g) + 10 H2O(g) + 6 N2(g) + O2(g) Calculate the total volume of gases when collected at 1.2 atm and 25°C from 1.3 multiplied by 102 g of nitroglycerin.

    asked by Tanisha on February 28, 2010
  60. AP Chem

    Consider the following unbalanced equation: Ca3(Po4)2+H2SO-->CaSO4+H3PO What masses of calcium sulfate and phosphoric acid can be produced from the reaction of 1.0 kg calcium phosphate with 1.0 kg concentrated sulfuric acid (98% H2SO4 by mass)? I'm so

    asked by Robyn on November 4, 2008
  61. math

    Algebraically analyze the graph of the function f(x)= -6x^2+5x+2 . Find the vertex, axis of symmetry, range, minimum or maximum value, increasing and decreasing intervals, and zeros. Write the Quadratic equation in standard form. [Standard form is:

    asked by shannon on September 30, 2008
  62. chemistry

    The Ka of a monoprotic weak acid is 7.25 × 10-3. What is the percent ionization of a 0.167 M solution of this acid? If the concentration is more than 1000 times greater than the Ka, then you can make an assumption that simplifies the algebra needed to

    asked by sara on April 10, 2013
  63. math

    A manufacturer has determined that if it sets the price of paper at x dollars per ream, then its monthly profit can be represented by the equation P = (6000 - 400x)(x - 2). Determine the y-intercept and explain what it means. The teacher said that the

    asked by Carly on December 5, 2016
  64. Chemistry

    Thioacetoamide decomposes in hot water to produce hydrogen sulfide, which is the active reactant in the first step of this reaction. write balanced equation of thioacetoamide in water. Does what I have below make sense? C2H5NS + H2O ----> H2S + C2H3NO

    asked by Anonymous on November 11, 2010
  65. math

    solve the following by a quadratic equation and then solving it. a rocket is projected vertically upwards from ground level, its height "h" meters after "t" seconds is given by the formula h=35t-5t^2 how long does it take to reach 50 meters? you should

    asked by Anonymous on April 30, 2017
  66. Physics - please help!

    I don't understand how to answer this problem or even which equation to insert it into: "A Dancer leaps across the stage in a beautiful grand jete. The ballerina leaps at an angle of 45° and is able to jump a horizontal distance of 1.5m in 0.547s. What is

    asked by Mariam on March 28, 2018
  67. Chemistry

    Some drain cleaners contain a mixture of sodium hydroxide and aluminum which reacts with water as follows: 2Al(s)+2 NaOH(aq)+6H2O(l)->2Na[Al(OH)4](aq)+3H2(g) What mass of hydrogen gas can be produced when 5g Al reacts with sufficient NaOH and H2O)

    asked by Christina on November 1, 2009
  68. College Algebra

    An object is projected vertically upward from the top of a building with an initial velocity of 112 ft/sec. Its distance s(t) in feet above the ground after t seconds is given by the equation s(t) = −16t^2 + 112t + 100. (a) Find its maximum distance

    asked by Kyle on November 12, 2014
  69. Chemistry

    The electrochemical cell described by the balanced chemical equation has a standard emf (electromotive force) of -0.35 V. Calculate the value (J) for the Wmax that the cell can do under standard conditions. Round your answer to 3 significant figures.

    asked by Roger on December 3, 2010
  70. Algebra I

    Tommy owes 3000 on his credit card. He is paying 14.5% interest compounded monthly. If it takes him 4 years to pay off the balance, what was the total amount that he ended up paying. Okay, so it gives me the equation a=p(1+r/n)^nt I did 3000(1+.145/12)^48

    asked by Heidi on October 21, 2015
  71. maths - geometry -yr11

    HI guys. find the equations of the lines represented by 4x^2 - 5xy - 6y^2 + 11x + 11y - 3 = 0 I am lost. What two lines are they asking for? And is there a general formula/appraoch to simplifying the duel equation with powers to 2? I tried turning the x^2

    asked by mike on June 19, 2008
  72. Chemistry

    I've run into some difficulty with my chemistry homework. We went over this practise question in class today as an example. However, I wasn't able to fully grasp how to work it out. "How many grams of nitrogen form when 34.6 grams of nitrogen dioxide

    asked by Kara on March 28, 2016
  73. Business Math

    2.) Maximizing revenue: The quantity demanded each month of the Sicard wristwatch is related to the unit price by the equation p=50/0.01x^2 + 1 (0 < or = x < or = 20) where p is measured in dollars and x is measured in units of a thousand. To yield a

    asked by pypski on December 14, 2016
  74. Chemistry

    Aqueous solutions of copper (II) sulfate, CuSO4, and potassium carbonate, K2CO3, a blue parcipitate of copper (II) carbonate forms in addition to one other compound. We have to write the balanced chemical equation for that but our teacher didn't teach us

    asked by Sarah on September 24, 2016
  75. chemistry

    20.0 mL of a 0.125 M solution of potassium iodide is added to 15.0 mL of a 0.235 M solution of lead (II) nitrate. A reaction occurs via the balanced equation below: 2KI(aq)+ Pb(NO3)2(aq) --> 2KNO3(aq) +PBI2(ppt) How much product can theoretically be

    asked by Brunette on September 1, 2012
  76. chemistry

    In the formation of acid rain, sulfur dioxide reacts with oxygen and water in the air to form sulfuric acid. Write the balanced chemical equation for the reaction. (Type your answer using the format CH4 for CH4.)

    asked by skyler on February 2, 2012
  77. Physics

    A juggler throws a ball with an initial horizontal velocity of +1.1 m/s and an initial vertical velocity of +5.7 m/s. What is its acceleration at the top of its flight path? Make sure to consider the sign when responding. Consider the upward direction as

    asked by Alexandra on September 13, 2014
  78. Chem

    When 0.10 g of insulin is dissolved in 0.200 L of water, the osmotic pressure is 2.30 Torr at 20°C. What is the molar mass of insulin? I tried using the van't hoff equation, converting Torr into atm; but not sure how to do it. my teacher didn't really

    asked by Mark on February 15, 2010
  79. Chemistry

    Use the Henderson-Hasselbalch equation to calculate the pH of a buffer prepared by adding 10mL of acetic acid to 20mL of 0.10M sodium acetate (Ka= 1.75 x 10^5 for acetic acid). Please showing working out, as am confused as to how to approach this question.

    asked by Lois on May 9, 2010
  80. Algebra 2

    Please help! I'm having the worst time figuring this out. 3. One of the fireworks is launched from the top of the building that is 70ft tall with an initial upward velocity of 150 ft/sec. a. What is the equation for this situation? b. When will the

    asked by S.Burris on January 22, 2016
  81. Chemistry

    I'm trying to do a lab, and I need to find the concentration of FeSCN+2 in five solutions based the calibration curve and the absorption. I have a calibration curve, the number of mLs and initial moles of Fe+3 and SCN-, the transmittances, the

    asked by Felliax on February 11, 2008
  82. Algebra help, check+ Help?

    Advertising costs for the save more store increases by about 32,000 per year, 352,000 was spent on advenrtising in 1992, write an equation that gives the amount spent as a function of the number of years since 1980. So, you get. Y=32000x But, I don't know

    asked by Allyson on December 1, 2010
  83. Math

    A heat exchanger is bought by a company for $180,000. It is considered to depreciate over 10 years to a scrap value of $10,000. Assuming a linear model for depreciation, write the equation of its value, V (in dollars), when t years have elapsed after the

    asked by casey on December 24, 2015
  84. Physical Chemistry3

    The specific volume of water is given quite accurately by the empirical relation ln(v) = −6.7081 + 1.01257 ln(T) + 280.663/T Use this relation to derive an equation for the coefficient of thermal expansion and determine the temperature at which this

    asked by Amber on September 29, 2008
  85. math

    An olympic swimmer is having his laps timed during practice. To be aware of his progress, the results are shown as order pairs (l, t) below: (1,19), (2,38), (3,57) (4,76). Which equation represents t, the time in seconds, as a function of l the number of

    asked by Jane on May 10, 2012
  86. Physical Chemistry3

    The specific volume of water is given quite accurately by the empirical relation ln(v) = −6.7081 + 1.01257 ln(T) + 280.663/T Use this relation to derive an equation for the coefficient of thermal expansion and determine the temperature at which this

    asked by Amber on September 29, 2008
  87. Algebra

    How can I put in another way using the formula for the equation on L=2.43*W^0.3326. My first answer were given to me using the log system is there another way I can set this up without using log. My instructor mention that w to the power of .3326 then

    asked by Mayl on June 23, 2010
  88. chemistry

    The following equation is the balanced combustion reaction for C6H6: 2C6H6(L) + 15O2(g) --> 12CO2(g)+6H2O(L)+6543 kj If 7.700 g of C6H6 is burned and the heat produced from the burning is added to 5691 g of water at 21 °C, what is the final temperature of

    asked by anon on October 28, 2016
  89. Chemistry

    Question: A certain sample of phosphate rock contains 26.26% P2O5. A .5428 gram sample is analyzed by percipitating MgNH4PO4*6H2O and heating it strongly to form Mg2P2O7. compute the mass of Mg2P2O7. I'm not entirly sure what to do. Do you set up an

    asked by Eliz on April 23, 2009
  90. Chemistry

    Write the overall reaction equation for the synthesis of aluminum potassium sulphate dodecahydrate, then determine the theoretical yield. 2Al+2KOH+4H2SO4+22H2O --> 2KAl(SO4)2*12H20 I don't know how to calculate theoretical yield from this. Please help?

    asked by Anonymous on March 13, 2012
  91. chemistry

    The following equation represents the partial combustion of methane, CH4. 2CH4(g) + 3O2(g) > 2CO(g) + 4H2O(g) At constant temperature and pressure, what is the maximum volume of carbon monoxide that can be obtained from 3.39 x 102 L of methane and 1.70 x

    asked by george on October 4, 2014
  92. Chemistry

    The coefficients of a balanced chemical equation indicate the relative number of _______ of the reactants and products. All stoichimetric calculations begin with a _______. Only ______ and ______ are conserved iin every reaction; moles, volumes, and

    asked by Bryan on April 4, 2007
  93. Physics

    Tarzan, who weighs 917 N, swings from a vine through the jungle. How much work is done by the tension in the vine as he drops through a vertical distance of 3.85 m? Simply calculating; W=(917N)*(3.85m)= 3530.45 J Isn't working, I'm not sure how to apply

    asked by Help on October 3, 2011
  94. Maths

    Dear Genius, Good day! The number of apples in a basket is between 60 and 120. If i put these apples into bags of 5, there will be a remainder of 1 apple. If i put these apples into bags of 8, there will be a remainder of 6 apples. Find the total number of

    asked by Surya on February 23, 2012
  95. chemistry

    A piece of nickel foil, 0.550 mm thick, 1.25 cm width and 1.00 cm long, is allowed to react with fluorine, F2 to give a nickel fluoride. Density of nickel is 8.908 g/cm3. How many moles of nickel foil were used? If you isolated 1.261 g of nickel fluoride,

    asked by Sarah on November 12, 2008
  96. Maths

    The number of apples in a basket is between 60 and 120. If i put these apples into bags of 5, there will be a remainder of 1 apple. If i put these apples into bags of 8, there will be a remainder of 6 apples. Find the total number of apples in the basket.

    asked by Surya on February 15, 2012
  97. physics

    A dive bomber has a velocity of 290 m/s at an angle θ below the horizontal. When the altitude of the aircraft is 2.15 km, it releases a bomb, which subsequently hits a target on the ground. The magnitude of the displacement from the point of release of

    asked by Spice on October 25, 2015
  98. AP Physics

    Two identical, small balls are suspended by separate 0.25m threads that are attached to a common point on the ceiling. Each ball has a mass of 8.0 x 10^-4 kg. Initially the balls are uncharged and hang straight down. They are then given identical positive

    asked by Ben on April 13, 2016
  99. Physics

    To supply the plumbing system of a New York office building, water needs to be pumped to a tank on the roof, where its height will provide a "head" of pressure for all the floors. The vertical height between the basement pump and the level of the water in

    asked by Steven on June 15, 2012
  100. Physics warming a nail

    2.) Pounding a nail into wood makes the nail warmer. Consider a 5-g steel nail 6 cm long and a hammer that exerts an average force of 500 N on the nail when it is being driven into a piece of wood. The nail becomes hotter. Show that the increase in the

    asked by Mary on September 20, 2009

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