mole fraction of nitrogen gas in compressed air is 0.78. If you have 1,000 molecules of compressed air, how many will be nitrogen molecules?
回答 (2)
2016-06-06 9:07 pm
"Mole fraction of nitrogen gas in compressed air is 0.78 (78%)" means
In 100 moles of the compressed air, there are 78 moles of nitrogen gas.
OR: In 100 molecules of the compressed air, there are 78 molecules of nitrogen gas.
Number of nitrogen molecules
= (Total number of molecules) × (Mole fraction of nitrogen gas)
= 1000 × 0.78
= 780
In 100 moles of the compressed air, there are 78 moles of nitrogen gas.
OR: In 100 molecules of the compressed air, there are 78 molecules of nitrogen gas.
Number of nitrogen molecules
= (Total number of molecules) × (Mole fraction of nitrogen gas)
= 1000 × 0.78
= 780
2016-06-06 7:17 pm
780
收錄日期: 2021-04-18 14:56:20
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