Question

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

0.33

+3

0.33

+4

0.5-0.33

 

Determine the variance of the nickel charge. Please enter the answer to 3 decimal places.

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