Gas constant

[Andrea_Torres]

I know that in PV=nRT there is a gas constant but how do you determine which one is suitable for the problem?

[peteryim]

It depends on the units of the other measurements given.

[Brianna Becerra 1B]

You pay attention to the units you have already and want to cancel out to get the units desired for the type of problem. The different gas constants have different units and are on the constants and equations sheet.

[Jesalynne 2F]

You will want to use the constant that has the units that apply to the problem you are solving; you will want the units to cancel to give you the unit you want your answer to be in.

[DanielTalebzadehShoushtari2A]

Yep, it is based on the units.
R = 8.314 J/(mol * K)
R = 0.08206 (atm*L)/(mol*K)

[Timmy Nguyen Dis 1I]

Look at the other units and use the one that matches.

[Timmy Nguyen Dis 1I]

Look at the other units and use the one that matches.

[Sean Tran 2K]

The value used is dependent on the units given.

[Emil Velasco 1H]

Choosing which R to use depends on what units you are trying to cancel out in order to solve for your specific answer.

[Rida Ismail 2E]

There are several gas constant to choose from but you should always choose the one that allows you to have all the units cancel. Ensure that you do not introduce new units with your gas constant

[AGaeta_2C]

It is crucial that you choose the version of the gas constant that has the same units as the problem you're working on, just so they cancel out and you don't introduce new units.