Calculates the equivalent mass of calcium chlorate CA (CI03) 2

207g

Explanation:

Given compound:

            Ca(ClO₃)₂

The equivalent mass can be derived by summing the molar masses of each atom

  Molar mass of Ca = 40

                            Cl  = 35.5

                            O  = 16

Now solve;

 Molar mass  = 40 + 2(35.5 + 3(16)) = 207g

c is the answer because when something is left after something evaporates that shows the chemical change.

d.) circle motion requires a force to give it a centripetal acceleration.