A student needs to prepare 3.0 liters 0.20 M NaOH solution from a 5.0 M NaOH stock solution. How many milliliter of stock solution should the student use? (1 point)
A) 100mL
B) 120mL
C) 150mL
D) 160mL

Chemistry worksheet - i am not sure what they are asking for exactly?

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.

Which of the following is not true about the atomic model of substances?