Ideal gases question Watch

davidsmith
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The initial vol. of a gas is 0.2m^3 at a temp of 27ºc and a pressure of 1.0 x 10^5 Pa. After compression the vol of the gas is 0.070m^3 and the temp is 57ºc. Find the final pressure of the gas.

No clue whatsoever on how to do this...

I know that P=F/A and that temp is a measure of the avg KE of the molecules but don't know how to relate everything! :confused:

Anyone can help me?
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thomaskurian89
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Use the ideal gas equation: PV/T = constant
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EierVonSatan
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pV=nRT?
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teachercol
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p1V1/T1 = p2V2/T2 as thomask says above (PV/T is constant)

Dont forget that temps need to be in Kelvin.
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The Muon
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\frac{P_1 \times V_1}{T_1} = \frac{P_2 \times V_2}{T_2}

You know that:
P_1 = 1\times 10^5 \mathrm{Pa}
V_1 = 0.2\mathrm{m}^3
T_1 = 27\degrees \mathrm{C} = ? \mathrm{K}
T_2 = 57\degrees \mathrm{C} = ? \mathrm{K}
V_2 = 0.070\mathrm{m}^3
You just need to sub in these values and rearrange the equation for P_2
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