In the Presence of Excess Oxygen,methane Gas Burns in a Constant-Pressure

Multiple Choice

In the presence of excess oxygen,methane gas burns in a constant-pressure system to yield carbon dioxide and water: CH₄ (g) + 2O₂ (g) → CO₂ (g) + 2H₂O (l) △H = -890.0 kJ
Calculate the value of q (kJ) in this exothermic reaction when 1.80 g of methane is combusted at constant pressure.

A) -100.1 kJ
B) 0.0324 kJ
C) -0.0100 kJ
D) 30.9 kJ
E) -1.00 × 10⁵ kJ