we know the atomic mass of oxygen. is 16u determine the atomic mass of nitrogen if 7 g of nitrogen react with 16 gram of oxygen to form nitrogen.
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Since the atomic weights of carbon, nitrogen and oxygen are 12, 14 and 16 respectively, among the following pairs of gases, the pair that will diffuse at the same rate is
Carbon dioxide and nitrous oxide.
The molar mass of carbon dioxide CO
2
is 12+16+16=44g/mol
The molar mass of nitrous oxide N
2
O is 14+14+16=44g/mol
Thus, both carbon dioxide and nitrous oxide have equal molar masses.
The rate of diffusion is inversely proportional to its molar mass.
When the molar mass of two gases is same, their rates of diffusion is same.
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