) Calculating Heat from Thermochemical Equations
The thermochemical equation for the combustion of methane gas is:

Calculate much heat is released when 3.5 moles of methane gas undergo a combustion reaction.

A combustion reaction includes the reaction between the chemical reactant and oxygen molecule to produce the product. The combustion reaction between methane and oxygen is given as:

CH₄(g) + 2O₂ (g) → CO₂(g) + 2H₂O (l), ΔH = -890 kJ/mol

The stoichiometry coefficient from the reaction gives 1 mole of methane releases -890 kJ/mol enthalpy.

So, 3.5 moles methane will release = 3.5 × -890 = -3115 kJ/mol

Therefore, -3115 kJ/mol of heat is released.

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) Calculating Heat from Thermochemical Equations The thermochemical equation for the combustion of methane gas is: Calculate much heat is released when 3.5 moles of methane gas undergo a combustion reaction.

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What is a combustion reaction?

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) Calculating Heat from Thermochemical Equations
The thermochemical equation for the combustion of methane gas is:

Calculate much heat is released when 3.5 moles of methane gas undergo a combustion reaction.