Question

PLEASE HELP ME ASAP!!!! PLEASE!!!!!!!!!! I will give brainliest and 20 points!! PLEASE!
1. Which of the following statements is true?
The square root of the molecular weight of a gas is equal to its rate of diffusion.
The rate of diffusion of a gas in inversely proportional to the square root of its molecular weight.
The rate of diffusion of a gas is directly proportional to the square root of its molecular weight.
The square root of the molecular weight of a gas is not related to its rate of diffusion.
2. Choose all that apply. Solids, liquids, and gases can be distinguished by their:

molecular weight
shape
temperature
kinetic energy
mass
density
(you can select as many that are correct, if you have to, all of them)
3. List the 4 main components of air in their molecular form.

(just go under 3 put 1, then list it, 2 then list it and so on)

Answer 1

#1
The rate of diffusion of a gas is inversely proportional to the square root of its molecular weight. 
#2
shape, molecular weight. I don't know for sure though
#3
O2, N2, Ar, H2O vapor