4FeS2 + 11O2 ----> 2Fe2O3 + 8SO2
2H2O2 + heat --> 2H2O + O2
This is not a chemical formula or equation.
Ethyn does NOT react with Benzene.
The reaction is:2 H2O2-----------------2 H2O + O2
It is a synthesis reaction.
S8 + 8o2 --> 8so2
It's an Oxidation-reduction
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4FeS2 + 11O2 ----> 2Fe2O3 + 8SO2
H2CN2 + heat --> N2 + CH2
The reaction of sulfur and oxygen to produce sulfur dioxide is called combination or synthesis.
The equation for the butter melting process is one pot plus butter plus heat. If the heat is microwave then the equation would be one container (no-metal) with cover plus butter plus heat.
Endothermic
salt+heat
3Mgo+2B
endothermic