Longitudianl waves transfer energy what to the direction of the wave motion

To find the enthalpy of a reaction in the lab, you measured the of the reactants and the change during the reaction.

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.

How many moles are in 123.0 grams of kclo4?