5. If all the particles in a material are made up of several smaller particles, and every larger particle
is identical, is the material a pure substance or
not? Explain your reasoning.

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

An experimental procedure requires a 10 ml of acid to be dissolved

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