For a given reaction, the activation energy is 63.9 kJ/mol. If the reaction rate constant is 4.1 x 10^–3 M^–1 s^–1 at 32.0 °C, what is the reaction rate constant at –5.0 °C? (R = 8.314 J/K·mol)

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.