Chapter 13, Problem 6E

(a)

To determine

Balance the chemical equation between calcium $\left(\text{Ca}\right)$ and chlorine $\left({\text{Cl}}_{\text{2}}\right)$ to give ${\text{CaCl}}_{\text{2}}$ in a combination reaction.

(b)

To determine

To determine: Balance the decomposition reaction of ${\text{Na}}_{\text{2}}{\text{CO}}_{\text{3}}$ to give ${\text{Na}}_{\text{2}}\text{O}$ and ${\text{CO}}_{\text{2}}$.