3. A 50.0 gram piece of iron (specific heat = 0.450 J/g-C°) is heated to 100. C° in boiling water and then dropped into 80.0 grams of water at
22.0 C° Calculate the equilibrium temperature.

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.