The pressure exerted by `6.0 g` of methane gas in a `0.03 m^(3)` vessel at `129^(@)C` is: (Atomic masses of `C= 12.01, H= 1.01 and R= 8.314 JK^(-1)mol^(-1)`)

The pressure exerted by 6.0g of methane gas in a 0.03 m^(3) vessel at 129^(@)C is "_____________" . ( Atomic masses : C = 12.01 , H = 1.01 and R = 8.314 JK^(-1) mol^(-1))

The pressure exerted by 6.0 g of CH_4 gas in 0.03 m^3 vessel at 120^@C is