1) ch4(g)+o2(g)→co2(g)+h2o(g)↑+△ 2) caco3(s)+2hcl(aq)→cacl2(aq)+co2(g)+h2o(l) 3) Al(OH)3(aq)+3HCN(aq)→Al(CN)3(aq)+3H2O(l) 4)H2So3(aq)+2KOH(aq)+△→K2SO3(aq)+2H2O↑(g) 5) Fe2(CO3)3(s)+HBr(aq)→FeBr3(s)↓+Co2(g)↑+H2O(g)↑+△
1) ch4(g)+o2(g)→co2(g)+h2o(g)↑+△ methane gas + oxygen gas yields carbon dioxide gas + water vapor + heat
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