# Chemistry gas volume question?

Under STP conditions, what is the mass, in grams, of 49.1 L of N2?

I don't know how to calculate this, please explain.

Thank you so much

### 2 Answers

- Anonymous8 years agoFavorite Answer
You need to first understand what you have been given as conditions.

STP means "Standard Temperature and Pressure" ( 273 K and 1 atm)

You also need to know that one mol of ANY gas at STP will occupy 22.4 L.

You now can use the conversion statement to find your answer.

Start with your given:

49.1 L N2 x 1 mol N2/22.4 L N2 x 28.0 g N2/1 mol N2 = YOUR ANSWER

I will let you do the math. Make sure you cancel your noms and doms so you end up with the unit you want.

Hope this helped.

Source(s): Chemistry Teacher - Retired - Anonymous4 years ago
37 mL = 0.037 L fifty two.0 cm Hg = 520 mmHg. For atm, divide 520 by skill of 760 ninety 8 F. you may prefer to rework F to C (seek for conversion formula). Then, upload 273 to the C value to get ok Then, use PV = nRT as given in a prior answer. n would be your unknown.