Na3PO4+CaCI2 --->NaCI+ Ca(PO4)2

3CaCi2 + 2Na3PO4 → Ca3(PO4)2 + 6NaCi

Explanation:

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.

answer; 4 electrons;