Ammonia burns in oxygen gas to form nitric oxide (NO) and water vapor. How many volumes of NO are obtained from six volumes of ammonia at the same temperature and pressure

6 volumes of NO

Explanation:

First, let us write a balanced equation for the reaction between between ammonia and oxygen to nitric oxide and water vapour. This is illustrated below:

4NH3 + 5O2 —> 4NO + 6H2O

From the balanced equation,

4 volumes of NH3 produced 4 volumes of NO.

Therefore, 6 volumes of NH3 will also produce 6 volumes of NO.