For the following reaction: 2H2S + 3O2 = 2H2O + 2SO2, how many grams of O2 (MM = 32.00g / mol) are needed to react with 45.9 of H2S (34.09g / mol)?

Aforce of attraction/repulsion due to the spin of electrons what is this force?

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

May someone me with these science questions