the number of moles present in 48 lit of O2 at STP is
Answers 2
Answer:
1.5 moles
Explanation:
Moles=
molecular weight
Weight
Molecular weight of O
2
=32g/mol
Moles=
32
48
=1.5 moles
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Author:
josiahzoew
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Given,
The volume of O₂ gas at STP = 48L
To find,
The number of moles of O₂ at given conditions
Solution,
At STP, the pressure is 1 atm and the temperature is 273K. The proportionality constant, R, is equal to 0.0821 [tex]\frac{L * atm}{mol * K}[/tex]
Now, using the ideal gas law equation,
P × V = n × R × T
where,
- P = Pressure (atm)
- V = Volume (litre)
- n = Number of moles
- R = Universal gas constant ([tex]\frac{L * atm}{mol * K}[/tex])
- T = Temperature (Kelvin)
Further, rearranging the ideal gas equation to get the number of moles
⇒ n = [tex]\frac{PV}{RT}[/tex]
Inserting values into the equation,
⇒ n = [tex]\frac{(1)(48) }{(0.0821)(273)}[/tex]
⇒ n = 2.14 moles
Hence, 48 litres of O₂ at STP = 2.14 moles.
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Author:
wilmaovoc
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