Pls help me, this is due today. I need clarification on how to do this. How many grams is 3.4 x 10^22 particles?

How does the motion of particles in a gas change as the gas cools

Which substance can be broken down by chemical means

In chemistry, the type of an atom (what element it is) is determined by: a) the number of protons it contains in its nucleus.b) the number of neutrons it contains in its nucleus.c) the number of protons it has in a cloud around the nucleus.d) the number of neutrons it has in a cloud around the nucleus.e) the number of electrons it exchanges with its neighbors.