PPT Slide

17 g of CH4 are allowed to react with 20 g of

O2. Find the moles of water produced.

CH4 + O2 => CO2 + H2O

1 2 1 2

17 g CH4 * 1 mole CH4 * 2 mole H2O

16.0 g of CH4 1 mole CH4

=2.1 mole H2O

20 g O2 * 1 mole O2 * 2 mole H2O = .6 mol

32.0 g O2 2 mole O2 H2O

Came from excess

reactant

Smaller: correct ans