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Lets derive the equation to be used
So, the one with greater molar mass will be most dense
Molar mass of CO2,
MM = 1*MM(C) + 2*MM(O)
= 1*12.01 + 2*16.0
= 44.01 g/mol
Molar mass of N2O,
MM = 2*MM(N) + 1*MM(O)
= 2*14.01 + 1*16.0
= 44.02 g/mol
Molar mass of Cl2 = 70.9 g/mol
Clearly, molar mass is highest for Cl2
So, Cl2 is most dense
Only 1 question at a time please
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