What is the enthalpy of formation of the substances given

Question

What is the enthalpy of formation of the substances given the change in enthalpy of reaction? Assign whether the process is endothermic or exothermic.

a.) Determine ΔH?_f for methanol (CH₃OH) given:

2CH₃OH (l) + 3O₂ (g) → 2CO₂ (g) + 4H₂O (g) ΔH? = -1199 kJ

b.) Determine ΔH?_f for glycine (C₂H₅NO₂) given:

4C₂H₅NO₂ (s) + 9O₂ (g) → 8CO₂ (g) + 10H₂O (l) + 2N₂ (g) which liberates 3896 kJ of heat under constant pressure.

c.) Determine ΔH?_f for formic acid (CH₂O₂) given:

HCHO₂ (l) → CO (g) + H₂O (l) which liberates 33kJ of heat under constant pressure.

d.) Determine ΔH?_f for baking soda (sodium bicarbonate) given:

2NaHCO₃ (s) → Na₂CO₃ (s) + H₂O (l) + CO₂ (g) which absorbs 85 kJ of heat under constant pressure.