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Topic: Gas law formula - A certain gas occupies 25.3 mL at a pressure of 790.5 mm Hg.  (Read 1046 times)

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Offline Yrenem

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Gas law formula - A certain gas occupies 25.3 mL at a pressure of 790.5 mm Hg.
« on: June 22, 2021, 03:14:45 AM »
 A certain gas occupies 25.3 mL at a pressure of 790.5 mm Hg. Determine the volume if the pressure is reduced to 740.5 mm Hg when the temperature is kept constant.
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Offline sjb

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Re: Gas law formula - A certain gas occupies 25.3 mL at a pressure of 790.5 mm Hg.
« Reply #1 on: June 22, 2021, 04:57:03 AM »
What are your thoughts - what Gas laws do you know that may help?
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Offline MaleMailMan

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Re: Gas law formula - A certain gas occupies 25.3 mL at a pressure of 790.5 mm Hg.
« Reply #2 on: June 23, 2021, 12:43:00 PM »
Note that two volumes and two pressures are involved. This means that you have a Boyle's Law problem. Use this:

P1V1 = P2V2

to solve the problem.

The unknown will be V2 and its unit will be mL.

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