
Madeline K. answered 10/05/21
B.A. in Chemistry with 3+ years of Tutoring Experience
Here are the steps to solve this problem:
1) Find out how many moles of CH4 are in 2.0 x 10^1 g of CH4
2) Use the equation to convert that many moles of CH4 into how much joules of energy are released. The reaction gives the equation of 1 mole CH4 with 2 moles O2 becomes 1 mole CO2, 1 mole H2O and 803.1 kJ, meaning for each 1 mole CH4 803.1 kJ energy are produced. Use this ratio to find out how many kJ energy would be produced from the number of moles you find in step 1.