Lightweight Camping Stoves Typically Use a Mixture of C₅ and C₆

Multiple Choice

Lightweight camping stoves typically use a mixture of C₅ and C₆ hydrocarbons, which is called white gas. Assuming white gas is 100% C₅H₁₂ with an enthalpy of combustion of -3,550 kJ/mol, how many grams of it must be used to heat 1.50 L of water from 20°C to 80°C? Assume all the energy is used to heat the water.

A) 8.96 g
B) 7.64 g
C) 9.65 g
D) 6.99 g
E) 10.73 g