Identify the type of reaction, write the products with phases, and balance. Show all work. 1) 2Mg(s) + O2(g)----> 2MgO (s) 2) Na(s) + Cl2(g)------> NaCl(s) 3). PbCO3(s)------> PbO(s)+Co2(g) 4). Ch4(g) + 2O2(g)----> CO2(g) + 2H2O(g)

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The correct classification of the reactions are as follows: 1) 2Mg(s) + O2(g)----> 2MgO (s) It is a synthesis reaction or a combination reaction. It involves the bonding of the reactant molecules forming one single molecule with new set of properties. 2) Na(s) + Cl2(g)------> NaCl(s) It is a combination reaction as well, the same as the first reaction. 3). PbCO3(s)------> PbO(s)+Co2(g) It is a decomposition reaction where a single molecule is breaks down into multiple molecules. 4). Ch4(g) + 2O2(g)----> CO2(g) + 2H2O(g) It is a combustion reaction since it involves the reaction with oxygen and the production od carbon dioxide and water.

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