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10 votes
10 votes
An unknown gas has pressure, volume and temperature of 0.9 atm 8L and 120°C respectively. How many moles of gas are present?

User Ytyng
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1 Answer

18 votes
18 votes

Answer:

n = 0.223 mol.

Step-by-step explanation:

Hello there!

In this case, according to the given information, it is possible for us to approach this problem via the ideal gas law, which involves the pressure, moles, temperature and volume of the gas:


image

Thus, by solving for moles we obtain:


image

Therefore, we plug in the given volume, temperature (in Kelvins) and pressure to obtain:


image

Best regards!

User Dmubu
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