Which gas sample at stp has the same total number of molecules as 2.0 liters of co2 (g) at stp

Volume decreases to half of original volume

Explanation:

Boyle's Law: This law states that pressure is inversely proportional to the volume of the gas at constant temperature and number of moles.

    (At constant temperature and number of moles)

where,

= initial pressure of gas = p

= final pressure of gas = 2p

= initial volume of gas = v

= final volume of gas = ?

Now put all the given values in the above equation, we get the final pressure of gas.

Therefore, the final volume of the gas will become half of initial volume.