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If a 15.83 g sample of a gas occupies 10.0 L at STP, what is the molar mass of the gas at 125 degrees Celsius?
If a 15.83 g sample of a gas occupies 10.0 L at STP, what is the molar mass of the gas at 125 degrees celsius? Please show work so I can learn how to complete problem. Thanks
Have issues with the STP of the problem.
4 Answers
- Trevor HLv 78 years agoFavorite Answer
At STP 1 mol gas has volume = 22.4L
If 15.83g gas has volume at STP = 10L
Then mass of gas in 22.4L = 22.4/10*15.83 = 35.5 g
Therefore 1 mol gas has mass = 35.5g ,
Molar mass of gas = 35.5g/mol
The molar mass of the gas does not change with change in temperature.
- plays_poorly...Lv 78 years ago
If a 15.83 g sample of a gas occupies 10.0 L at STP, what is the molar mass of the gas at 125 degrees Celsius?
------------------------------------------------------------
15.83 g/10 L = x/22.4 L
(15.83 g x 22.4 liters/mole)/10 liters = x
= 35.6 grams/mole.
x = molar mass, which does not change with
temperature.
