A balloon that contains 0.750 moles of gas has a volume of 16.8 L. If the balloon expands to a volume of 25.4 L at a constant pressure and temperature, how many moles of gas would the balloon contain?

Question

anonymous · Answer

Use Ideal Gas Law: PV = nRT

anonymous · Answer

I DNT KNW..CAN YU SET IT UP?

anonymous · Answer

you are given P, V, n and T
u will need to plug in the values twice.

clear now?

anonymous · Answer

A balloon that contains 0.750 moles of gas has a volume of 16.8 L. If the balloon expands to a volume of 25.4 L at a constant pressure and temperature, how many moles of gas would the balloon contain? 

This is your question.

You are assuming constant pressure and temperature conditions. Normally, you would have:

PV = nRT 

However, we are assuming that pressure and temperature are constant, and we are instead looking at the INITIAL for moles and volume and FINAL for moles and volume.

From the equation, we can deduce that volume is proportional to the number of moles.

If you would like to form an expression of the ideal gas law with only moles and volume, it would look something like this:

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