Chapter 7.3, Problem 7.30QAP

Balance each of the following chemical equations:

a. $\text{Ca}\left(s\right)+{\text{Br}}_{\text{2}}\left(l\right)\to {\text{CaBr}}_{\text{2}}\left(s\right)$
b. ${\text{P}}_{\text{4}}\left(s\right){\text{+O}}_{\text{2}}\left(g\right)\to {\text{P}}_{\text{4}}{\text{O}}_{\text{10}}\left(s\right)$
c. ${\text{Sb}}_{\text{2}}{\text{S}}_{\text{3}}\left(a\right)+\text{ HC1}\left(aq\right)\to {\text{SbCl}}_{\text{3}}\left(aq\right)+{\text{ H}}_{\text{2}}\text{S }\left(g\right)$
d. ${\text{Fe}}_{\text{2}}{\text{O}}_{\text{3}}\left(s\right)\text{ + C}\left(s\right)\to \text{Fe}\left(s\right)\text{ + CO}\left(g\right)$