Why is the volume of H2 produced larger than the volume of O2 produced?

Determine the number of moles of B that remain given the following: The reaction is only 52% complete A+2B → 4C A=2.06 mol B=4.67 mol

If 0.634g of O2 is lost from 2.317g of a mixture of KClO3, find the percent by mass of KClO3 in the original mixture.

6. Hydrogen and iodine react to produce hydrogen iodide. If 3 moles hydrogen and 3 moles iodine react to produce 163 grams of hydrogen iodide, what is the percent yield? Assume constant temperature and pressure. The molar mass of H2 is 2.02 g/mol, of 12 is 253.8 g/mol, and of HI is 127.9 g/mol. H2(g) +12(g) → 2 HI(g)

How many grams of ammonia are needed to react completely with 854 g of Oxygen?  4NH3(g)+5O2(g)--->4NO(g)+6H2O(g)

How many moles of Al will be consumed when 0.400 mol of Al2O3 are produced in the following equation?  4Al + 3O2 --> 2Al2O3

if 8.00 g of oxygen gas reacts exactly with 0.504 g of hydrogen gas how much hydrogen peroxide H2O2 (in grams) could be produced? 8.50 g 9.01 g 17.0 g or 7.50 g

5. How many atoms of hydrogen are produced if 25.0 g of water decomposes? Write the balanced equation first.

22.0 g of CO​​2 gas and 9.01 g of H​​2O gas are formed from combustion of an unknown hydrocarbon (containing only hydrogen and carbon) in the presence of O​​2 gas. The molar mass of the gas is 84.2 g/mol. What is its molecular formula?

How many grams of nitrogen dioxide is produced if 14g of nitrogen and 25 grams of oxygen mix