A gas is expanded from an initial volume of 1 L at 1 atm at 7 °C to a final volume of 5 L. During the expansion the gas increases to 287 °C. What is the final pressure?

0.40 atm

Explanation:

To answer this problem we can use the combined gas law:

In this case:

We input the data:

And solve for P₂:

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