Answer to Question #68891 in General Chemistry for yolanda

Question

How many liters of methane gas (CH4) need to be combusted to produce 8.5 liters of water vapor, if all measurements are taken at the same temperature and pressure? Show all of the work used to solve this problem

Answer 1

Solution:
The reaction of combustion of methane:
CH4(g) + 2O2(g) → CO2(g) + 2H2O(g)
1 liter of methane produces 2 liters of water vapor. So, 8.5 liters of water is produced by 8.52=4.25 liters of methane.
Answer: 4.25 liters.