Question

If you have 10 Liters or CH4 how many grams of water can you make?CH4+2O2=CO2+2H2O

Answer 1

Mass of water (m) = 14.76 g

Step-by-step explanation

Given:

Balanced chemical equation

`CH_4+2\text{ O}_2\rightarrow CO_2\text{ + 2H}_2O`

Volume of CH4 = 10 L

Required: Mass of water produced

Solution:

Step 1: Find the mass of CH4

density = m/V

m = density x V

m = 0.657 g/L x 10 L

m = 6.57 g

Step 2: Find the moles of CH4

n = m/M n is the moles, m is the mass and M is the molar mass

n = 6.57g/16,04 g/mol

n = 0.409 mol

Step 3: Use stoichiometry to find the moles of H2O

The molar ratio between CH4 and H2O is 1:2

Therefore the moles of H2O = 0.409 x 2 = 0.819 mol

Step 4: Calculate the mass of H2O

n = m/M

m = n x M

m = 0.819 mol x 18,015 g/mol

m = 14.76 g