Chemistry, 19.05.2020 02:12 6clevare

Can someone answer these questions for me please?

15. Use bond energies to determine the ∆H for the combustion of methane (CH₄).

16. Use Hess's law to determine the ∆H for the combustion of liquid methanol (CH₃OH).

17. Using your answers from question 16, how much energy will you get from burning 245.0 g of methanol in excess oxygen?

18. The ∆S is 209.6 J/K for the following reaction:
C₂H₄ (g) + 3O₂ (g) → 2CO₂ (g) + 2H₂O (g)

• What is the absolute entropy of O₂ (g)?

19. What is ∆G for the following reaction at 298 K?
2C₆H₆ (l) + 150₂ (g) → 12CO₂ (g) + 6H₂O (g)

20. If a reaction has a ∆H of -120.0 kj/mole and is spontaneous for all temperatures less than 200.0 K, what is ∆S?

Answers: 2

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Can someone answer these questions for me please?

15. Use bond energies to determine the...