Amixture consists of sand and an aqueous salt solution. which procedure can be used to separate the sand, salt, and water from each other? (1) evaporate the water, then filter out the salt. (2) evaporate the water, then filter out the sand. (3) filter out the salt, then evaporate the water. (4) filter out the sand, then evaporate the water.

In a ni-cd battery, a fully charged cell is composed of nickelic hydroxide. nickel is an element that has multiple oxidation states. assume the following proportions of the states: nickel charge proportions found 0 0.17 +2 0.3 +3 0.33 +4 0.5 (a) determine the mean of the nickel charge. enter the answer to 2 decimal places.(b) determine the cumulative distribution function of nickel charge.