calculate the mass of oxygen in 2.2l of CO2 at STP
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Molar volume for any gas at STP is 22.4 L
So,no. of moles of CO2 is 2.8/22.4
Now there are 2 moles O atoms per mole CO2 molecule , So No. of mole of O atoms is
2×2.8/22.4
Now mass of O is 16×2×2.8/22.4=4g
So,no. of moles of CO2 is 2.8/22.4
Now there are 2 moles O atoms per mole CO2 molecule , So No. of mole of O atoms is
2×2.8/22.4
Now mass of O is 16×2×2.8/22.4=4g
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