Question

Question #b6b70

Answer 1

The density of `N_2` is 1.250625 g/L
or simply 1.25 g/L

Explanation:

At STP,

The molecular mass of `N_2` is 28.014 g/mol.

The volume of`N_2` is 22.4L.

Density of `N_2` =Molecular mass of `N_2` )/Volume of `N_2`

`rArr` `(28.014)/(22.4)` g/L

= 1.2506255 g/L

                                              or simply 1.25 g/L.

Answer 2

First - be aware that it DOESN'T.
`(28g)/(22.4L) = 1.25 g/L`

Explanation:

It only occupies that volume at STP, not NTP. It is unnecessary given the terms of the terms of the problem in any case.
A mole of nitrogen (`N_2`) has a mass of 28 grams/mole. Density is mass per unit volume, so the density is simply:

`(28g)/(22.4L) = 1.25 g/L`