Samples of the gases `O_(2), N_(2), CO_(2) and CO` under the same conditions of temperature and pressure contain the same number of molecules represented by X. The molecules of oxygen `(O_(2))` occupy V litres and have a mass of 8 g. Under the same conditions of temperature and pressure, answer the following questions:
In answering the above questions, name the law you have used?

Explanation

Avogdaro.s law states that same conditions of temperature and pressure, equal volumes of gases contain number of molecules thus
Avogadro.s law.