Curly or straight (yesterday's pic or today's)?

How air particles exert a pressure on the inside of the balloon

Correct relationship between molecular formula and empirical formula

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.