Given the information in this chart, which of the following answers best represents the enthalpy of combustion for hydrogen gas, in kJ/mol?
Substance
D
H
f
º (kJ/mol)
H
2
(
s
)
0
CO
2
(
g
)
–393.5
H
2
O (
l
)
–285.85
O
2
(
g
)
0
0
–393
–107
–285
+107