To use the gas law constant R=0.0821 the unit for temp should be kelvin and the unit for pressure should be atmospheres True or false

It is crucial to match your units of Pressure, Volume, number of mole, and Temperature with the units of R. If you use the first value of R, which is 0.082057 L atm mol-1K-1, your unit for pressure must be atm, for volume must be liter, for temperature must be Kelvin.

its true