3. Write the equilibrium expressions for Key for the following reactions. a. 203 (8) = 3 02 (8)
b. 2 C2H4 (g) + 2 H2O(g) = 2 C2H6 (g) + O2 (g)
c. 2 H2(g) + S2(g) + 2 H2S (8)
d. 4 NH3(g) + 5 O2 (g) = 4 NO (8) + 6 H20 (8)

How many atoms of mg are present in 97.22 grams of mg? 6.022 × 1023 2.408 × 1024 4.818 × 1024 5.855 × 1025

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

Use this information to determine the number of calends electrons in the atoms. which of the following correctly compares the stability of the two atoms? a) both are unreactive b) both are highly reactive c) a is unreactive and d is reactive d) a is reactive and d is unreactive