What is the molality of acetone in a solution composed of 255 gm of acetone (CH3)2CO, dissolved in 200 gm of water?

What is the mass defect of a mole of nuclei with 1.8 x 10^15 j/mol binding energy?

3. how much energy in joules is required to evaporate .0005 kg of liquid ammonia to vapor at the same temperature? 4. how much energy ( in megajoules ) is given up by .75 kg of water at 0c when it freezes to form ice at 0c? 5. explain how heat works between and at critical temperatures?

Which of these expressions are correct variations of the combined gas law? p1v1t2 = p2v2t1 both