Use the information from the following table to calculate the approximate standard change of enthalpy in kJ/mol for the combustion of coal.

Substance
DHf º (kJ/mol)
C (s)
0.0
CO2 (g)
–393.5
H2O (l)
–285.85
O2 (g)
0.0

0
+286
–698
–286
–394