The activity series shows that solid chromium will be oxidized to form
A. chromium 3+ ion
B. chromate ion
C. nothing
D. chrome

A. chromium 3+ ion

Explanation:

The activity series shows that chromium will be oxidized to chromium 3+ ions. This series shows the reactivity of each metal relative to one another.

It is used to predict the activity of metals.

                      Cr     ⇄      Cr³⁺     +      3e⁻

     The more oxidized  metals are located at the top of the series.

8 m/s because for him to get the same amount of energy as ray is putting out, bobby, who weighs half as much as ray, needs to run twice as fast.