chemistry

posted by .

If 8.00g of methane is burned with 6.00g of oxygen. How much methane,oxygen,carbon dioxide,and water remain after the reaction is complete in grams?

  • chemistry -

    This is a limiting reagent problem. I know that because amounts are given for BOTH reactants.
    CH4 + 2O2 ==> CO2 + 2H2O

    Convert 8.00g CH4 to mols. mol = grams/molar mass = about 0.500 g but you should confirm that as well as all of the other numbers. I estimate as I go along.

    Convert 6.00 g O2 to mols. 6/32 = about 0.19 mols.

    Using the coefficients in the balanced equation, convert mols CH4 to grams CO2.
    That is 0.500 mols CH4 x (1 mol CO2/1 mol CH4) = 0.500 x 1/1 = 0.500 mol CO2.

    Do the same for mols O2 to mols CO2.
    0.19 x (1 mol CO2/2 mols O2) = 0.09 mols CO2.

    This gave us two answers for mols CO2 and obviously one of them is not right. The correct value in limiting reagent problems is ALWAYS the smaller value and the reagent producing that value is the limiting reagent. Therefore, 0.19 mol CO2 is formed and O2 is the limiting reagent.

    Using that value, calculate mols H2O formed. Using that value calculate mols CH4 used. CH4 remaining = initial mols - mols used.

    You can convert mols CH4, CO2, and H2O to grams by g = mols x molar mass. There is no oxygen left.
    Post your work if you stuck.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. chem help

    The reaction of methane and oxygen yields carbon dioxide gas and water. The unbalanced reaction is as follows: CH4(g) + O2(g)CO2(g) + H2O(g) A. If 1.26 grams of methane are reacted, how many grams of water vapor are produced?
  2. Chemistry

    When 0.100 mol of carbon is burned in a close vessel with 8.00g of oxygen, how many grams of carbon dioxide can form?
  3. Chemistry

    When 0.100 mol of carbon is burned in a close vessel with 8.00g of oxygen, how many grams of carbon dioxide can form?
  4. chemistry

    1)The reaction of methane and oxygen yields carbon dioxide gas and water. The unbalanced reaction is as follows: CH4(g) + O2(g)CO2(g) + H2O(g) A. If 0.718 grams of methane are reacted, how many grams of water vapor are produced?
  5. Chemistry

    A mole of methane reacts with 64g of oxygen at 1 atm, 425 K. There are two ways in which methane can react with oxygen. It can either form water vapor and carbon dioxide or water vapor and carbon monoxide. After reaction the final …
  6. Please help me!!! Chemistry

    Multiple choice When methane is burned with oxygen, the products are carbon dioxide and water. If you produce 18 grams of water from 8 grams of methane and 32 grams of oxygen, how many grams of carbon dioxide were produced in the reaction?
  7. Chemistry

    1. Hydrogen gas combines with oxygen gas to yield water. if 15 g O2 is present in the reaction, compute how much water will be produced. 2. Ten (10)grams methane gas combines with oxygen gas to form water and carbon dioxide. How much …
  8. chemistry

    Gaseous methane CH4 will react with gaseous oxygen O2 to produce gaseous carbon dioxide CO2 and gaseous water H2O . Suppose 0.481 g of methane is mixed with 2.9 g of oxygen. Calculate the maximum mass of carbon dioxide that could be …
  9. Chemistry

    Methane reacts with oxygen to produce carbon dioxide, water and heat. If the percent yield of the reaction is 90.0%, how many grams of methane must be burned to produce 150.0 kJ of energy?
  10. Chemistry

    In the lab, 5.8 L of methane gas is burned with excess oxygen gas at SATP. How much carbon dioxide gas is produced?

More Similar Questions