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ANTONII [103]
3 years ago
5

What is the mass of 2.15 liters of N2 gas at STP?

Chemistry
2 answers:
Musya8 [376]3 years ago
5 0

Explanation: molar mass of N2=28

Volume occupied at stp=22.4 so 28/22.4=1.25 so mass nitrogen will be 56 multiply 1.25 =70g

IgorLugansk [536]3 years ago
4 0

Answer: 2.68 grams

Explanation:

According to avogadro's law, 1 mole of the substance occupies 22.4 liters at STP and contains avogadro's number 6.023\times 10^{23} of particles and weighs equal to its molecular mass.

1 mole of N_2 weighs 28 grams.

Also 1 mole of N_2 occupies 22.4 Liters.

Thus 22.4 L N_2 weigh = 28 grams

2.15 L of N_2 weigh =\frac{28}{22.4}\times 2.15=2.68g

Thus the mass of nitrogen gas is 2.68 grams.

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