Answer :
The moles are in 22.4 L of any gas at STP is 1 mol.
The ideal gas equation is given as follows :
P V = n R T
where,
P = pressure of the gas
V = volume of the gas
R = gas constant = 0.082 atm L / mol K
T = temperature
n = moles
at STP : the standard pressure of any gas is 1 atm, the stander temperature of any gas is 273 K.
n = P V / R T
n = ( 1 atm × 22.4 L) / ( 0.082 atm L / mol K × 273 K )
n = 1 mole
thus, the number of moles of the gas at STP is 1 mole.
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