Boyle's law gives the relationship between pressure and volume of gases. it states that for a fixed amount of gas at constant temperature, pressure of gas is inversely proportional to volume. PV = k where P - pressure , V - volume and k - constant P1V1 = P2V2 where parameters for the first instance are on the left side and parameters for the second instance are on the right side of the equation substituting this equation P x 0.5650 L = 715.1 bar x 1.204 L P = 1 524 bar
