# Question #2c148

##### 1 Answer

That volume of nitrogen gas would contain **20.6 moles** at STP.

By definition, **STP** conditions imply a pressure of **100 kPa** and a temperature of **273.15 K**. Under these conditions, *1 mole* of any ideal gas occupies exactly **22.7 L** - this is known as the molar volume of a gas at STP.

Since you know the volume *1 mole* would occupy under these condtions, you can determine how many moles you have in 467 L by

Rounded to three sig figs, the answer will be

**SIDE NOTE** *Many problems still use the old definition of STP, which implies a pressure a 1 atm and a temperature of 273.15 K. Under these condtitions, the molar volume of a gas is equal to 22.4 L.*

*If your teacher wants you to use the old value for the molar volume of gas at STP, simply redo the calculation using 22.4 L, instead of 22.7 L.*