Propane (C3H8) is burned in oxygen to produce carbon dioxide and water. How much heat is given off when 3.0 mol C3H8 are reacted with 5 mol O2?
1. 672 kJ
2. 1555 kJ
3. 2012 kJ
4. 4435 kJ
5. 6048 kJ
6. 7392 kJ
7. 916 kJ
8. 5122 kJ

the correct answer would be d. hope this !

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.