69 whenever organic matter is decomposed under oxygen-free (anaerobic) conditions, methane is one of the products. thus, enormous deposits of natural gas, which is almost entirelymethane, exist as a major source of fuel for home and industry. (a) it is estimated that known sources of natural gas can produce5600 ej of energy (1 ej  10 18 j). current total global energyusage is 4.0  10 2 ej per year. find the mass (in kg) of knownsources of natural gas ( h ° rxn for the combustion of ch 4  802 kj/mol)

Question

Marisa Powell

Chemistry

23 February, 20:14

69 whenever organic matter is decomposed under oxygen-free (anaerobic) conditions, methane is one of the products. thus, enormous deposits of natural gas, which is almost entirelymethane, exist as a major source of fuel for home and industry. (a) it is estimated that known sources of natural gas can produce5600 ej of energy (1 ej  10 18 j). current total global energyusage is 4.0  10 2 ej per year. find the mass (in kg) of knownsources of natural gas ( h ° rxn for the combustion of ch 4  802 kj/mol)

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Jayleen Hancock · Answer 1

The solution is as follows:

The problem would only need the information of 5,600 EJ for the known sources of methane. The molar mass of methane is 16 g/mol.

802 kJ/mol (1000 J / 1 kJ) (1 mol/16 g) (1000 g/1 kg) (x kg) = 5,600 EJ (10¹⁸ J/1 EJ)

Solving for x,

x = 1.18*10¹⁴ kg of natural gas or methane