1. What is an air mass?

1.
a large body of air with the same temperature and moisture.
2.
any kind of cloud that produces rain, sleet, snow, or hail.
3.
a place where weather always changes in an extreme way.

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.