123 g of K3P is how many liters of K3P?

Harvey mixes two liquids. which observation of the new mixture most likely indicates a precipitate is forming?

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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.