What is the temperature of a gas if 5.0 moles of the gas occupy a 10 liter container at a pressure of 2.5 atm? Calculate the molar concentration of each ion (Na+ and PO4 3-) in a aqueous Na3PO4 solution when 2.0 g of Na3PO4 is dissolved in water so that the final volume of the solution is 150 ml.