The volume of a gas-filled balloon is 20.0 l at 250 k and 145 kpa pressure. what would the volume be at standard temperature and pressure (stp)?

Answer : The volume of gas will be, 31.26 L

Solution :

At STP, pressure of gas is 101.3 kPa and temperature of gas is 273 K.

The combined gas equation is,

where,

= initial pressure of gas = 145 kPa

= final pressure of gas = 101.3 kPa

= initial volume of gas = 20 L

= final volume of gas = ?

= initial temperature of gas = 250 K

= final temperature of gas = 273 K

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

Therefore, the volume of gas will be, 31.26 L

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