Question

How many moles are in 2.5 g of N2?

Answer 1

Molar mass of nitrogen gas = (14 × 2) = 28 g

But molar mass is 1 mole

`28 \: g \: are \: 1 \: mole \: of \: nitrogen \\ 2.5 \: g \: are \: \{ (2.5 * 1)/(28) \} \: moles \\ \\ = { \boxed{ \boxed{0.089 \: moles}}}`

Answer 2

0.089

Step-by-step explanation:

2.5/ 14= .178 then 0.178/ 2 again and you get 0.089