A chemist has a 100-gram sample of a compound that contains 17.096 grams of carbon, 2.186 grams of hydrogen, 10.844 grams of oxygen, 8.544 grams of nitrogen, 28.8618 grams of chlorine and 32.495 grams of bromine. What is the empirical formula of the compound?

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