What is 6421 in scientific notation

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.

What element has similar physical and chemical properties as boron.

Select the correct answer. wax is a nonpolar substance. in which type of substance is it most soluble?