Question

What mass of argon gas, Ar, is in a 30L scuba tank of the temperature of the tank is 27 degrees Celsius and the pressure inside is 200 atm

Answer 1

$n=\frac{20260\times30}{300.15\times8.31}=243.68$ mol

$m=n\times M=243.68\times39.948=9734.56$ g