According to avagados law the volume of gas will

This law is sometimes referred to as the 'Avogadro's Hypothesis' or 'Avogadro's Principle'. This is an experimnetal gas law that is relating to the volume of gas to the amount of substance of gas that is present to the state. This law also states that ''Equal volumes of all gases, at the same temp. and pressure, have the equal amount of molecules.''.

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If the law states that the volumes of all gases have the same number of molecules, they have to be that same temperature and have the same pressure to work properly.