From the reaction: B2H6 + O2 → HBO2 + H2O How many grams of water are produced from 16.8 g of B2H6 is used?

Answer 1

B₂H₆ + 3O₂ ==> 2HBO₂ + 2H₂O ... balanced equation

Use dimensional analysis along with the stoichiometry of the balanced equation:

16.8 g B₂H₆ x 1 mol B₂H₆ / 27.67 g x 2 mol H₂O / mol B₂H₆ x 18 g H₂O/mol H2O = 21.9 g H₂O