What is the approximate pka of a weak acid ha if a solution 0.1 m ha and 0.3 m a– has a ph of 6.5?

Compare and contrast the bohr model and the electron cloud models of the atom.

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 of these is an intensive property of a substance