A gas has a volume of 36.0 L and a pressure of 750. torr when the temperature is 10. °C. What is the pressure if the volume changes to 15.0 L and the temperature changes to 78 °C, if the amount of gas stays the same?

2232 torr

Explanation:

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

The combined gas equation is,

where,

= initial pressure of gas = 750 torr

= final pressure of gas = ?

= initial volume of gas = 36.0 L

= final volume of gas = 15.0 L

= initial temperature of gas =

= final temperature of gas =

Now put all the given values in the above equation, we get:

The pressure  will be 2232 torr if the volume changes to 15.0 L and the temperature changes to 78 °C, if the amount of gas stays the same.

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