Question 1
10.0 g of a metal, initially at 25°C, are placed into 10.0 g of water, initially at 100°C. Which metal will have the
highest final temperature? Shown after each metal is its specific heat in J/(g∙°C).
◦ calcium (0.650)
◦ sodium (1.23)
◦ nickel (0.440)
◦ lead (0.160)
Question 2
| Given: 4 NO2(g) + O2(g) → 2 N2O5(g) | ΔH° = -110.2 kJ |
find Δ
H° for 8 N
2O
5(
g) → 16 NO
2(
g) + 4 O
2(
g).
◦ 440.8 kJ
◦ -220.4 kJ
◦ 220.4 kJ
◦ -440.8 kJ
