The Thermochemical Equation for the Combustion of Methanol Is Given

Multiple Choice

The thermochemical equation for the combustion of methanol is given below. CH₃OH( ) + 3/2 O₂(g) → CO₂(g) + 2 H ₂O(g)
Δ_rH° = -638.7 kJ/mol-rxn
What is the enthalpy change for the combustion of 8.59 g of CH₃OH?

A) -171 kJ
B) -19.9 kJ
C) -2.38 × 10³ kJ
D) -5.49 × 10³ kJ
E) -1.76 × 10⁶ kJ