Respuesta :

Answer:

About 7.109g

Explanation:

25000mL is the same as 25 liters.

[tex]PV=nRT \\\\0.5 (25)=n (0.0821) (300) \\\\n\approx 0.508[/tex]

Multiplying this by the molar mass of nitrogen, you get about 7.109 grams of nitrogen. Hope this helps!