The reaction pathway diagram for a reaction is shown.
Which statements about the reaction are correct?
1- The reaction is endothermic.
2- The reaction is exothermic.
3- The diagram represents the combustion of methane.
4- The diagram represents the thermal decomposition of limestone.
1 )
1 and 3
1 and 4
3 )
2 and 3
4 )
2 and 4
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