Chemistry
Grade-9
Easy
Question
The number of molecules in 22.4 liters of a gas measured under standard temperature and pressure conditions is equal to Avogadro’s number.
- True
- False
Hint:
The number of molecules depends on the temperature and pressure of the gas.
The correct answer is 'True'.
The number of molecules depends on the temperature and pressure of the gas.
¶We can use the Ideal Gas Law to calculate the molecules of hydrogen
¶PV = nRT
¶P = 1bar, V = 22.4L, R = 0.082 L bar mol-1K-1, T = 273.15K at STP
¶n = 1 mol 
number of molecules = Avogadro number.
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