1. finance

    FF has an annual credit sales of $250,000 units with an average collection period of 70 days. The company has a per unit variable cost of $20 and a per unit sale price of $30. Bad debts currently are 5% of sales. The firm estimates that a proposed
  2. Physics - Torque

    Consider a rectangular block of mass 30kg, height= 3m, length = 2m. A force F is applied horizontally at the upper edge. The acceleration of gravity is 9.8 m/s^2. 1)What is the minimum force required to start to TIP the block? 2)What is the minimum
  3. physics

    Model rocket engines are sized by thrust, thrust duration, and total impulse, among other characteristics. A size C5 model rocket engine has an average thrust of 5.26 N, a fuel mass of 12.7 g, and an initial mass of 25.5 g. The duration of its burn is 1.90
  4. physics

    1. The efficiency of a squeaky pulley system is 73 percent. The pulleys are used to raise a mass to a certain height. What force is exerted on the machine if a rope is pulled 18.0 m in order to raise a 58 kg mass a height of 3.0 m? Answer: 13.24 N? A
  5. math

    A bottle containing 10 liters of alcohol one liter of alcohol is removed and replaced with water. After a liter of the mixture was removed and replaced with water, the operation being carried out 7 times in total. Then that amount of alcohol remains in the
  6. math

    A bottle containing 10 liters of alcohol one liter of alcohol is removed and replaced with water. After a liter of the mixture was removed and replaced with water, the operation being carried out 7 times in total. Then that amount of alcohol remains in the
  7. math

    Help please A bottle containing 10 liters of alcohol one liter of alcohol is removed and replaced with water. After a liter of the mixture was removed and replaced with water, the operation being carried out 7 times in total. Then that amount of alcohol
  8. Chemistry

    The alcohol in gasohol burns according to the reaction C2H5OH(l) + 3O2(g) --> 2CO2(g) + 3H2O how many grams of water are produced when 3.0 moles of C2H5OH are burned in an excess of oxygen gas?
  9. science

    the process in which an animal's cells use oxygen and digested food molecules to release the energy in food is called 1. breathing 2. cellular respiration 3. diffusion*** 4. gas exchange
  10. chemistry

    The combustion reaction of acetylene gas is represented by this equation: 2C2H2(g) + 5 O2(g) ==> 4CO2(g) + 2H2O(g) How many grams of CO2 and grams of H2O are produced when 52.0g C2H2 burns in oxygen?
  11. Chemistry

    a mixture of .0285g of H and .0141 mol of oxygen in a closed container is sparked to initiate a reaction. How many grams of H2O can form?Which reactant is in excess and how many grams remain?
  12. Chemistry 3A

    C2H2(g)+ 5/2o2(g)-> 2Co2(g)+ H2o(g)+ 1255.8KJ how many grams of C2H2 are reacted when 310 KJ of heat are released? I left the oxygen (O) lowercase in the equation so it does not get mixed up with zero.
  13. chemistry

    the reaction of aluminum metal (Al) with oxygen (O2) forms Al2O3. What is a balanced equation for this redox reaction. What are two half reactions to show how many electrons are gained or lost by each species?
  14. Chemistry

    How many grams of oxygen can be produced by heating 10.0g of mercury (II) oxide? Sulfuric acid is added to 8.10g of magnesium, how many grams of hydrogen are set free? Answered abovd.
  15. science

    The process in which an animal’s cells use oxygen and digested food molecules to release the energy in food is called a. Breathing b. cellular respiration c. diffusion d. gas exchange
  16. Chemistry

    Please help me write these two balanced equations. Dissolution of rust, Fe2O3, by sulfuric acid. and Ammonium nitrite reacts with oxygen to form ammonium nitrate. Any help would be awesome, thankyou.
  17. Chem

    2H2(g)+O2(g) ---> 2H2O(l) delta H= -572kJ/mole of O2 Calculate the amount of heat evolved when 10g of hydrogen are burned in excess oxygen. Can someone please explain step by step? =D
  18. chem

    A sample of oxygen that occupies 1.8 × 10−6 mL at 582 mm Hg is subjected to a pressure of 1.51 atm.m. What will the final volume of the sample be if the temperature is held constant? Answer in units of mL
  19. chemistry

    Consider the reaction: CH4(g) + 2 O2(g) → CO2(g) + 2 H2O(l) ΔH = - 890.3 kJ What volume of CH4(g) at 25°C and 755 Torr will produce 88600 kJ of heat when reacted with excess oxygen?
  20. chemistry

    A sample of oxygen that occupies 2.5 × 10−6 mL at 508 mm Hg is subjected to a pressure of 1.2 atm. What will the final volume of the sample be if the temperature is held constant? Answer in units of mL
  21. Chemistry!!

    How do I go about doing this question? How much heat energy is involved when 5.58g of Fe metal reacts with excess oxygen to produce Fe2O3? Do you need the equation, and if so, what would tha be? Fe + O2 > Fe2O3? I don't think that is right though. And
  22. CHEMISTRY URGENT!

    a sample of oxygen that occupies 1.00 x 10^6mL at 575mmHg is subjected to a pressure of 1025atm. what will the final volume of the sample be if the temperature is held constant? how do uu set up the equation
  23. physics/chem

    Calculate the number of coulombs of positive charge in 261 cm3 of (neutral) water. (Hint: A hydrogen atom contains one proton; an oxygen atom contains eight protons.)
  24. Chemistry

    Consider a mixture of air and gasoline vapor in a cylinder with a piston. The original volume is 30. cm3. If the combustion of this mixture releases 980. J of energy, to what volume will the gases expand against a constant pressure of 640. torr if all the
  25. sci

    melissa burned her hand on the stove. why did putting her hand in a bowl of cold water make the burn less severe a. cold transferred to her hand from the water by convection. b. cold transferred to her hand from the water by conduction. <------ c.heat
  26. Science

    What does copper react with when heated and what is formed as a result? (When you put copper underneath a fire, would the copper be reacting with oxygen or carbon dioxide?)
  27. Chemistry

    An organic compound on analysis gave C=57.8% and H=3.6% and rest of oxygen.The vapour density of the compound was found to be 83.Find the molecular formula of the compound?
  28. chemistry

    Determine the theoretical and percent yield of hydrogen gas if 78.5 g water undergoes electrolysis to produce hydrogen and oxygen and 3.63 g hydrogen is collected?
  29. chemistry

    The enthalpy of combustion of carbon to carbon dioxide is -394 kJ according to the equation: C (s) + O2 (g) --> CO2 (g) How many kJ of heat are released when 24.0 g of carbon are burned in an excess of oxygen
  30. chemistry

    Determine the theoretical and percent yield of hydrogen gas is 36 g of water undergoes electrolysis to produce hydrogen and oxygen and 3.8 g of hydrogen is collected.
  31. chemistry

    Determine the theoretical and percent yield of hydrogen gas if 78.0 g water undergoes electrolysis to produce hydrogen and oxygen and 3.02 g hydrogen is collected.
  32. Chemistry

    Determine the theoretical and percent yield of hydrogen gas if 78.5 g water undergoes electrolysis to produce hydrogen and oxygen and 3.23 g hydrogen is collected.
  33. chemistry

    Write the reactants and products of the reaction between zinc and oxygen. Include the half-reactions. What type of reaction is this? I know the reaction is 2Zn + O2 -> 2ZnO I am not really sure where to go from here.
  34. Chemistry HELP!!!

    Which of the following contains the greatest number of particles? A) 4g of helium gas B) 4g of oxygen gas C) 4g of hydrogen gas D) 4g of water Why is the answer C? Pls explain to me clearly, thks!
  35. Calculus

    A company needs to make a cylindrical can that can hold precisely 1.5 liters of liquid. If the entire can is to be made out of the same material, find the dimensions (radius and height) of the can that will minimize the cost. Round your answer to the
  36. Chemistry

    1000 g of a 50% (mass percentage) nitric acid solution is to be diluted to 20%(mass percentage) nitric acid solution. How many liters of water should be added to the starting solution? Please show me the detail answer
  37. Chemistry

    1000 g of a 50% (mass percentage) nitric acid solution is to be diluted to 20%(mass percentage) nitric acid solution. How many liters of water should be added to the starting solution? Please show me the detail answer
  38. Chemistry

    A sample of air was compressed to a volume of 18.0 L. The temperature was 290.0 K, and the pressure was 6.80 atm. How many moles of gas were in the sample? If the sample had been collected from air at P = 2.0 atm., what was the original volume of the gas
  39. Math

    Please help me with this problem: A bourbon that is 51 proof is 25.5% alcohol by volume while one that is 82 proof is 41% alcohol. How many liters of 51 proof bourbon must be mixed with 1.0 L of 82 proof bourbon to produce a 66 proof bourbon? Give answer
  40. Spanish

    Spanish help please.....!!!! _________________ The directions I was given was this: Choose the word that correctly completes the sentence (a; para; que); or select "No word is required". _________________ I'm stuck on all of the ones I was given. Pls help
  41. chem

    A very flexible helium-filled balloon is released from the ground into the air at 20degree C The initial volume of the balloon is 5.00L , and the pressure is 760mmHg. . The balloon ascends to an altitude of 20Km , where the pressure is 76.0mmHg and the
  42. chem

    A very flexible helium-filled balloon is released from the ground into the air at 20degree C The initial volume of the balloon is 5.00L , and the pressure is 760mmHg. . The balloon ascends to an altitude of 20Km , where the pressure is 76.0mmHg and the
  43. Chemistry II

    If 15.0 mL of 1.2e-4 mol/L HI is added to 26.0 mL of 9.2e-4 mol/L HI, what is the pH of the solution? M x L = mols. Calculate mols for solution 1, do the same for solution 2, add mols together and divide by total liters. That will be the new molarity. Then
  44. chemistry

    if i mix 4 grams of hydrogen and 32 grams of oxygen how many grams of water would be produced
  45. Science

    How many grams of water must decompose to produce 2 grams of hydrogen and 16 grams of oxygen?
  46. chemistry

    How many grams of water can be made by the reaction of 1.25 grams of ethanol with 2.50 grams of oxygen?
  47. biology

    how is it possible for an enzyne to lower the required energy of activation for a reaction.
  48. Chem 101

    How many calories are required to raise the temperature of 24.4 g of water by 27.8°C
  49. Chemistry

    In general, what are the conditions required for Schiff's Base to polymerise?
  50. science

    How much energy is required to raise the temperature of 22.8 g of copper from 30°C to 1250°C?
  51. CHEMISTRY

    What volume of 2.5*10^-2 M H2SO4 is required to neutralize 125mL if 0.03 M KOH
  52. Chemistry

    How many mL of 0.100 M NaOH are required to neutralize (or titrate) 25.0 mL of 0.15 M H3PO4?
  53. Chemistry

    How many milliliters of 0.291 M HCl would be required to titrate 6.83 g KOH?
  54. chemistry

    how many moles of LiF would be required to produce a 2.5 M solution with volume of 1.5 M?
  55. chemistry

    How many ml of a .25M HCL would be required to neutralize completely 2.5g of NaOH
  56. chemistry

    How do you find the number of moles required to neutralize acids?
  57. chm140

    How much heat is required to melt 26.5 of ice at its melting point?
  58. chemistry

    how many mL of 1M HC2H3O2 are required to neutralize a spill of 25mL of 6M NaOH?
  59. Physics

    How much force is required to accelerate 5kg at 15m/sec?
  60. science

    How much energy is required to raise 1 gram of water from -15 C to 110 C?
  61. chemistry

    How many grams of AgNo3 are required to make 25 mL of a .80M solution?
  62. Delgado

    How many kilocalories are required to produce 1.027 mol of aluminum??
  63. chemistry

    how many grams of 5%NaNO3 will be required to prepare 250ml solution
  64. Cheistry

    How much heat is required to melt 43.5g of ice at its melting point?
  65. Chemistry

    How much heat is required to melt 43.5g of ice at its melting point?
  66. Chemistry

    How much heat is required to melt 43.5g of ice at its melting point?
  67. Chemistry

    How many mL of 0.225M HCl would be required to titrate 6.00 grams of KOH?
  68. Stoichiometry

    How much 6M HCl and NaHCO3 are required to make 1 quart of CO2?
  69. Chemistry

    How many milliliters of 0.326 M HCl would be required to titrate 5.48 g KOH?
  70. Chemistry

    How many electrons would be required to fill the following sublevels? *3s *4s *3d *4d *3p *2d *3f *4d Choices are as follows A. 2 B 6 C 10 D 14 E There is no such orbital
  71. Chemistry

    How many electrons would be required to fill the following sublevels? This is what I got *3s = A *4s = A *3d = C *4d =C *3p =B *2d= E *3f =E *4d =C Choices are as follows A. 2 B 6 C 10 D 14 E There is no such orbital
  72. Chemistry

    How many mL of 0.225M HCl would be required to titrate 6.00 grams of KOH?
  73. Physics HW Help, Please

    What is the energy required to accelerate a 1600 kg car from rest to 33 m/s?
  74. Chemistry

    Calculate the ratio of NaF to HF required to create a buffer with a pH of 4.00.
  75. chemistry

    What mass of protons would be required to just neutralize the charge of 1.1 g of electrons?
  76. Chemistry

    Estimate the amount of 1.0m NaOH in ml required to neutralize 5.0g of KHP
  77. physics

    What voltage is required to run a 45 W light bulb if the current is 0.5 A?
  78. Chemistry

    How many moles of Al(OH) are required to completely react with 2.75mol of H2SO4?
  79. Physics

    how much energy is required to change 40 g of ice at -10 C to steam at 110 C?
  80. science

    how many grams of nacl are required to neutralize 100 ml of 1M h2so4???
  81. physics

    What force is required to accelerate a 90kg bike to 20 m/s in 15 sec? I need to know HOW to do it!
  82. Chem

    What mass of protons would be required to just neutralize the charge of 3.5 of electrons?
  83. physics

    What force is required to accelerate a 90kg bike to 20 m/s in 15 sec? I need to know HOW to do it!
  84. Chem

    How many grams of O2 are required to burn13.0g of acetylene? The answer I got is 40gO2 is this right.
  85. Chemistry

    The amount of k2Cr2O7 required to prepare 100 ml of its 0.05 N solution
  86. English

    what is wrong with the following sentence. "A glove and ball is the required gear.”
  87. chenistry

    how many calories are required to melt a 135.0g sample of ice at 0.0 c
  88. math

    (3.845*10^-4)(3.67*10^6) in scientific notation 3-4 digit answer required
  89. Science

    how much heat is required to change 5 grams of iron to 10c
  90. math

    6.6*10^-4 --------- = ? 9.54*10^-7 in scientific notation form 3-4 digit answer is required
  91. chemistry

    1oocm3 of 0.1mhcl as to be prepared from 2mhcl, how much of the stalk is required
  92. Music

    what are the potential earnings of a song writer and the education required?
  93. chemistry

    how many grams of glucose are required to produce 50mL of 0.1 m solution?
  94. Chemistry

    How many milliliters of 6.50 M HCl(aq) are required to react with 5.95 g of an ore containing 35.0% Zn(s) by mass?
  95. Chemistry

    How much heat is required to boil 90.0g of water at its boiling point?
  96. Physics

    the force required to accelerate a mass of 10.0kg at 4.00m/s^2 is
  97. math

    To increase the temperature of 100.0g of H20 from -50.0C to -10.0C how much energy is required?
  98. Chem

    What mass of protons would be required to just neutralize the charge of 3.5 of electrons?
  99. Chemistry 101-URGENT

    How much heat is required to melt 43.5 g of ice at 0°C?
  100. Physics

    How much work is required to stop an electron (m= 9.11 * 10^-31 kg) which is moving with a speed of 1.80×10^6 m/s?