Ralph K. answered • 02/18/15

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Hi Jill,

We need to use the ideal gas law.

P * V = n * R * T.

This is a typical problem where the amount of gas (n) and the Temperature (T) are held constant.

So.....

P * V (initial) = P * V (final) or

We need to use the ideal gas law.

P * V = n * R * T.

This is a typical problem where the amount of gas (n) and the Temperature (T) are held constant.

So.....

P * V (initial) = P * V (final) or

P (Initial) = 2.5 atm

V (Iniital) = 150 cm^3

P (Final) = 1.0 atm

2.5 * 150 = 1.0 * V (Final)

Thus V (Final) = 2.5 * 150 / 1.0 = 375 cm^3

Depending on how your professor views significant figures, he(she) may want the answer to be 380 cm^3

If you have any questions, send me a comment.

Sincerely,

Ralph K.

If you have any questions, send me a comment.

Sincerely,

Ralph K.