Answer:

Explanation:
Hello,
In this case, since the 3% by volume is represented as:

By using the ideal gas equation we compute the density of CO:

Then we apply the conversion factors as follows:

Regards.
Answer:
See explanation
Explanation:
Coal is primarily used for electricity generation. The burning of coal leads to emission of gases such as oxides of carbon, oxides of sulphur, oxides of nitrogen and water vapour. All these go straight into the atmosphere.
Petroleum is primarily used as transportation fuels. The burning of petroleum oils mostly leads to the emission of oxides of carbon and sulphur together with water vapour into the atmosphere.