7. Na_(2)CO_(3)+2NHNO_(3)+CO_(2)+H_(2)O+NaNO_(3) S. Al+HClarrow AlCl_(3)+H_(2) 9. Ca_(3)P_(2)+H_(2)Oarrow PH_(3)+Cu(OH)_(3) 10. C_(3)H_(8)Oll+O_(2)arrow CO_(2)+H_(3)O

7. $Na_{2}CO_{3}+2NHNO_{3}+CO_{2}+H_{2}O+NaNO_{3}$ is not a balanced chemical equation. The correct balanced equation should be $Na_{2}CO_{3}+2HNO_{3}\rightarrow 2NaNO_{3}+CO_{2}+H_{2}O$.<br /><br />8. $Al+HCl\rightarrow AlCl_{3}+H_{2}$ is a balanced chemical equation. It represents the reaction of aluminum with hydrochloric acid to produce aluminum chloride and hydrogen gas.<br /><br />9. $Ca_{3}P_{2}+H_{2}O\rightarrow PH_{3}+Cu(OH)_{3}$ is not a balanced chemical equation. The correct balanced equation should be $Ca_{3}P_{2}+6H_{2}O\rightarrow 2PH_{3}+3Ca(OH)_{2}$.<br /><br />10. $C_{3}H_{8}Oll+O_{2}\rightarrow CO_{2}+H_{3}O$ is not a balanced chemical equation. The correct balanced equation should be $C_{3}H_{8}O+5O_{2}\rightarrow 3CO_{2}+4H_{2}O$.