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AP Chemistry/Unit 1: Atomic Structure and Properties
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Ideal Gas Law And Stoichiometry

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R=0.0821 L∗atm/(mol∗K)R = 0.0821\,L*atm/(mol*K)

All of the following statements about using the ideal gas law in stoichiometric calculations are correct EXCEPT:

A

The ideal gas law relates pressure, volume, temperature, and number of moles for a gaseous system.

B

At STP, one mole of an ideal gas occupies 22.4 L22.4\,L, providing a useful conversion factor.

C

When conditions deviate from STP, the ideal gas law, PV=nRTPV=nRT, must be used to determine the number of moles.

D

Using the molar volume of 22.4 L/mol22.4\,L/mol is accurate for gases under any conditions, even if not at STP.

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