The pressure of a piston with a volume of 650 cm3 and 85ºC is 830 mmHg. It is heated to 350ºC and compressed to a volume of 65 cm3. What is the new pressure?

34176.5 torr

Explanation:

It is given that :

Initial pressure, torr

Initial volume,

Initial temperature,  

Final volume,  

Final temperature,  

Therefore, using the combined gas laws, we can write :

Substituting the values, we get

    = 34176.5 torr

So the new pressure is 34176.5 torr.

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