Classify each process as either physical or a chemical change.

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.

37.0 °c = °f (human body normal temperature)

When did stem cell research become known ? who discovered stem cell? what experiments or studies have been conducted so far?