How much energy is released when 2.95 kg of diethyl ether freezes?

The key is the heat of fusion: 7.27 kJ is released for each mole of diethyl ether that freezes at its freezing point. 2950 g (C2H5)2O x (1 mol (C2H5)2O / 74.0g (C2H5)2O) x (7.27 kJ / 1 mol (C2H5)2O) = 290. kJ

Heat of fusion = 7.27kJ/mol

< > according to newton's third law of motion, forces always act in equal but opposite pairs. another way of saying this is for every action, there is an equal but opposite reaction.< >

it is the most commonly accepted one