Boyle's law says that the volume of a gas varies inversely with the pressure. when the volume of a certain gas is 5 l , the pressure is 586 kpa (kilopascals). what is the pressure when the volume is 2 l ?

Let P = Pressure, V = Volume and be K = constant, by definition of Boyle's Law in which says that the volume of a gas varies inversely with the pressure, we have:  P = K / V  586 = K / 5  K = 2930.  Then, the pressure when the volume is 2L will be:  P = 2930/2 = 1465Kpa