Energy and Chemistry: Chapter Review

What is the work when 124 mL of gas contracts to 72.0 mL under an external pressure of 822 torr?

What is the heat, in kJ, when 1,744 g of Hg increases in temperature by 334°C? (specific heat of Hg = 0.139 J/g·°C)

What is the final temperature when a 45.6 g sample of Al at 87.3°C gains 188 J of heat? (specific heat of Al = 0.897 J/g·°C)

Refining aluminum converts Al₂O₃ into Al and O₂. Which is the correct thermochemical equation?

What mass of H₂O can be heated from 22°C to 80°C by the combustion of 1 mol of CH₄ (which releases about 890 kJ)?

Find ΔH for PbCl₂(s) + Cl₂(g) → PbCl₄(ℓ) given Pb(s) + Cl₂(g) → PbCl₂(s) (−359 kJ) and Pb(s) + 2Cl₂(g) → PbCl₄(ℓ) (−329 kJ).

What is ΔH for C(s, gra) → C(s, dia), and what does it mean? (ΔH_f of diamond is +1.897 kJ/mol)

Select every statement that is TRUE.