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. is not a balanced chemical equation. The correct balanced equation should be .8. is a balanced chemical equation. It represents the reaction of aluminum with hydrochloric acid to produce aluminum chloride and hydrogen gas.9. is not a balanced chemical equation. The correct balanced equation should be .10. is not a balanced chemical equation. The correct balanced equation should be .