chemistry questions?

Question

which gas will diffuse at the fastest rate under the same conditions of temperture and pressure?

1. F2
2.N2
3.H2
4.O2

--------------------------------------

what formula represents a tetrahedral molecule

a. HBr
b.CaCl2
c.CH4
d.B2

------------------------------

real gas behavior devitates from ideal has behavior because reall gas particles have

1. no volime and no attraction
2. volume and no attraction
3. no volume but some attract.
4. volume and some some attract.

Answer 1

H2..... CH4....and 4

Answer 2

heavier gases diffuse more slowly than lighter ones

a tetrahedral molelcule forms when there are 4 areas of high electron density on the central atom

under high pressures a gas is compressed so that the volume of the molecules themselves becomes a significant fraction of the total volume occupied by the gas.

at lower temperatures the molecules of a gas move so slowly that the potential energy due to even small attractive forces becomes important

Now, you've got the theories so you should be able to figure out the answers.