A300cmcub sample of gas exert pressure of 600kpa at 27degree c what pressure would it exert in 200cmcub container 20 degree c

To convert Celsius to Kelvin, add 273.15.

Initial Volume ($V_1$) = $300 \, \text{cm}^3$
Initial Pressure ($P_1$) = $600 \, \text{kPa}$
Initial Temperature ($T_1$) = $300.15 \, \text{K}$
Final Volume ($V_2$) = $200 \, \text{cm}^3$
Final Temperature ($T_2$) = $293.15 \, \text{K}$
Final Pressure ($P_2$) = ?

The Combined Gas Law states that for a fixed amount of gas, the ratio of the product of pressure and volume to the absolute temperature is constant:

To find $P_2$, rearrange the formula:

The pressure the gas would exert is approximately 879 kPa.