What mass of heptane, C7H16, is required to produce 90.2 kJ of heat at constant pressure from its combustion in excess oxygen?
C7H16(l) + 11O2(g) ? 7CO2(g) + 8H2O(l)
Ho = -4816.5 kJ/mol
A) 2.08 × 10-2 g
B) 100 g
C) 5.35 × 103 g
D) 1.87 × 10-4 g
E) 1.88 g