In a butane lighter, 9.5 of butane combines with 34.0 of oxygen to form 28.7 carbon dioxide and how many grams of water?

Answer 1

9.5 what
34.0 what
28.7 what

Answer 2

9.5 g Butane + 34.0 g Oxygen = 43.5
Then 43.5 - 28.7 g CO2 = 14.8

That is the answer: 14.8 g