The answer is C, because the water molecules are evaporating and the salt molecules are staying the same.
Calcium ions have a +2 charge and sulfur ions have a -2 charge, so the formula is CaS
The object with the mass ok 1kg will move more quickly because it is lighter than the 100kg object
I think the answer is C) i am sorry if i am wrong plz let me know if i am wrong thank u.