Determine the latent heat of vaporization of unknown substance X in kcal/g if 4.0 g of boiling liquid X are completely vaporized in 1.2 hours by an input of 15 kcal/h into the system by an energy source.

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.