SHORT ANSWER: Given the diagram below, what type of electrochemical cell is present? & HOW DID YOU KNOW?

Could someone please help quickly?!

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.

Which statement best describes what happens when molecular compounds melt

At element makes up all organic compounds?