- Why does sodium chloride dissolve in water and ethanol and not in cyclohexane?

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How many of the following moleules are polar? BrCl3 CS2 SiF4 SO3? A rubber ball is dropped from the top of a hole. Exactly 1.5 seconds later, it's heard hitting the bottom. How deep is the hole? Which part of a velocity vs. time graph can be used to calculate the displacement of the object? Zeros -4,0,5 degree:3 polynomial with integer coefficients of 1? What is 1 third of 2.5 litres of paint?