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Given the equation C3H8+5O2->3CO2+4H2O.

1.)Suppose 1.5 moles of C3H8 will be used, How many moles of H2O and CO2 will be formed?
2.)what volumes (at STP) of O2 and CO2 are involved?

1 answer

1. The coefficients tell you that
1 mol C3H8 produces 3 mol CO2 and 4 mols H2O. So 1.5 mol C3H8 will produce ...mols CO2 and ....mols H2O?

2. 1 mol of a gas at STP occupies 22.4 L.
So your mols CO2 and your mols H2O will occupy ...... L each.