hi, if your looking for extra points (50+) and brainiest here is ur chance, answer this question correctly plz

What is the independent variable in this investigation? mass volume sample number substance density

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.

Anyone who's in connections academy chemistry b have the factors that affect the rate of a reaction portfolio already done?