Answers

2016-04-14T19:17:41+05:30
The reaction in which  two reactants combine and form a product is called a chemical combination reaction.
EX:: C +  O_{2} -----> C O_{2} + Q.



hope this helps u.
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2016-04-14T19:20:26+05:30
 c + o2 = co2 is carbon dioxide. this is a combination and exothermic reaction
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