How many moles of O2 are in a flask with a volume of 0.45 L at a pressure of 320 kPa and a
temperature of 280K?
What Law is used to solve?
I just need to know the Law and and explanation please I dont understand how it could be any law since it has pressure, volume, and temperature.
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Ответ:
0.0833 moles of O₂
Explanation:
Most usual Law to solve this sort of problem, is the Ideal Gases Law
Pressure . Volume = number of moles . R . Temperature
where R is the Ideal Gases Constant → 0.082 L.atm/mol.K
First of all we need to convert the pressure from kPa to atm, because the Units of R
320 kPa . 1 atm / 101.3 kPa = 3.16 atm
Now, you replace data:
3.16 atm . 0.45L = mol . 0.082 L.atm/mol.K . 280K
(3.16 atm . 0.45L) / (0.082 L.atm/mol.K . 280K) = mol
0.0833 moles of O₂
Ответ:
the answer would be 342, how I got this answer? well i just added all the numbers in
hope this helps though! C: