At 0.75 atm, the volume of a gas is 300 ml. If the temperature remains constant and the pressure is changed to 0.55 atm, what is the new volume of the gas?

Which aqueous solution of ki freezes at the lowest temperature? 1) 1 mol of ki in 500. g of water 2) 2 mol of ki in 500. g of water 3) 1 mol of ki in 1000. g of water 4) 2 mol of ki in 1000. g of water