posted by Collin .
How many grams of methane must be combusted to heat 1.05 of water from 24.0 to 89.0, assuming as a product and 100% efficiency in heat transfer?
from 24.0 to 89.0, assuming .........as a product and........
You omitted something. And do you know the heat of combustion in kJ/mol or kJ/g?