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Chemistry
Can someone tell me what gas law equation I'd use for any type of gas law problem? (ex. if the pressure and temperature is given, you'd use _____ law.)
ex. Boyle's law, Charles' law, ideal gas law, etc.
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Boyle's law is for Pressure and Volume
P1V1=P2V2 (pretend the numbers are subscripts)
Charles' law uses Volume and Temperature.
V1 over T1 = V2 over T2
Combined Gas Law uses pressure, volume, and temperature.
P1V1 over T1 = P2V2 over T2
Avogadro's Law uses Volume and the Number of Moles
V1 over n1 = V2 over n2
The Ideal Gas law uses:
Pressure, Volume, Number of moles, The Gas Constant*, and the temperature.
The Gas Constant is .08206. The Label for this is L x atms over Mol x K.
The equation is PV=nRT.
Remember, temperature should always be in Kelvin (k).
Good Luck =)
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Pressure and volume use Boyle's Law.
Volume and temperature use Charles's Law.
Pressure and temperature use Gay-Lussac's Law.
The ideal gas equation questions aren't as easy to pinpoint. If you're given the amount of the gas in mol, you probably have to use the ideal gas equation for that question. Or, if you're given two of the three -- pressure, volume, temperature -- and you're asked to find the third, you might have to first figure out how many mol there are based on other parts of the question, and then you'll use the ideal gas equation.
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You'd use Charles' law.
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