6. What is the final temperature of a 91.0 g piece of copper, with an initial temperature of 20.0°C, after absorbing 1581 J of heat? Copper has a specific heat of 0.386J/g °C.

How many liters of ethylene glycol antifreeze (c2h6o2), with a density of 1.100 g/l, would you add to your car radiator containing 15.0 kg of water if you needed to protect your engine to - 21.5°c? for water, kf = 1.86°c m -1.