To find the percentage of the gas that is oxygen, we need to calculate the total mass of the gases in the sample first.
The total mass of the gas in the sample is:
0.78 g (nitrogen) + 0.52 g (oxygen) + 0.13 g (carbon dioxide) = 1.43 g
To find the percentage of the gas that is oxygen, we can divide the mass of oxygen by the total mass of the gases and multiply by 100.
Percentage of oxygen = (0.52 g / 1.43 g) x 100 = 36.4%
Therefore, the percentage of the gas that is oxygen is 36.4%.
If a sample of air contains 0.78 g nitrogen, 0.52 g oxygen, and 0.13 g carbon dioxide, what percentage of the gas is oxygen?
21.0%
0.364%
52.0%
36.4%
1 answer