Be sure to answer all parts.

Calculate the standard free-energy changes for the following reactions at 25°C:

(a) H2(g) + Br2(l) → 2HBr(g)

kJ/mol

(b) 2C2H6(g) + 7O2(g) → 4CO2(g) + 6H2O(l)

kJ/mol

Chemical energy is a form of a. kinetic energy only. b. both potential and kinetic energy. c. neither potential nor kinetic energy. d. potential energy only. reset

Melissa is interested in her family tree and how her family has changed over its many generations. melissa probably more closely resembles

For the reaction, 4 a(g) + 3 b(g) => 2 c(g), the following data were obtained at constant temperature. experiment initial[a],mol/l initial [b],mol/l initial rate, m/min 1 0.200 0.150 5.00 2 0.400 0.150 10.0 3 0.200 0.300 10.0 4 0.400 0.300 20.0 which of the following is the correct rate law for the reaction? 1. rate = k[a]2[b]2 2. rate = k[a][b] 3. rate = k[a]2[b] 4. rate = k[a][b]2