# physics

A rigid container holds hydrogen gas at a pressure of 3.0 atm and a temperature of 20 degrees Celsius. What will the pressure be if the temperature is lowered to -33 degrees Celsius? Please give your final answer in atm.

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1. You can use the gas laws

P1/T1 = P2/T2

You have to use degrees Kelvin

Change C to K by adding 273.

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2. P1/T1 = P2/T2

P1 = 3.0 ATM
T1 = 20+273 = 293K

P2 = ?
T2 = -33+273=240

3.0/293 = P2/240

P2 =(3.0/293)*240

P2 = 2.457337
= 2.46 ATM

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3. I don't know the answer but you TOTALLY must be in my physics class haha. Physics for Life Science?

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