Why is the ideal gas constant important?
It is only important if you want to relate the pressure or the volume or the moles or the temperature of a gas to any of the other values. It is a proportionality constant for the ration of
If you happen to use newtons as your pressure and
Either way, using the ideal gas law equation,
R is simply the ratio of the pressure and volume to the moles of gas and temperature.
Don't know if that explains why it is important, but it at least explains a few things about the gas constant.