0.089
Explanation:
2.5/ 14= .178 then 0.178/ 2 again and you get 0.089
Answer:
Molar mass of nitrogen gas = (14 × 2) = 28 g
But molar mass is 1 mole
[tex]28 \: g \: are \: 1 \: mole \: of \: nitrogen \\ 2.5 \: g \: are \: \{ \frac{2.5 \times 1}{28} \} \: moles \\ \\ = { \boxed{ \boxed{0.089 \: moles}}}[/tex]
