E is the only correct answer. "Like dissolves like", so a non-polar compound will tend not to dissolve in water.
How bad is it? Feels rough, rubbing compound, not bad polishing compound. 3-M makes a good combo compound/wax. If rubbing compound doesn't do it, you will be wet sanding. A good professional polisher will work the best for the compound, orbitals are ...
The ratio between Y and X is 4.2 / 0.4 =10.5 The ratio between Y and X in the other compound is 7.0/ 2.0 = 3.5 10.5 / 3.5 = 3 The formula of the first compound is XY and the formula in the second compound is XY3 About the question d mass X + mass Y =...