C)
Metallic solids consist of metal ions which are surrounded by delocalized electrons.
Answer:

Explanation:
Heat of combustion of
= -1366.8 kJ/mol
Heat of formation of
= -393.5 kJ/mol
Heat of formation of
= -285.8 kJ/mol
The reaction is

Assuming
is the standard enthalpy of formation of ethanol

The standard enthalpy of formation of ethanol is
.
I think the answer is c. two molecules
I hope this helped you have a good day