I need help completing and balancing equations Mg+O2 --> KOH + NHO3 --> Febr3 + KOH--> CuSO4 + Na--> C6H14+O2 -->    smallest set of whole number coefficients and classify as a single replacement, etc

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First reaction is synthesis:

2Mg + O2 --> 2MgO

Second reaction is double replacement or neutralization

KOH + HNO3 -->  KNO3  + HOH

Third reaction would also be double replacement

FeBr3 + 3 KOH --> Fe(OH)3  + 3 KBr

Fourth reaction is single replacement:

CuSO4 + 2 Na  -->  Na2SO4 ...

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First reaction is synthesis:

2Mg + O2 --> 2MgO

Second reaction is double replacement or neutralization

KOH + HNO3 -->  KNO3  + HOH

Third reaction would also be double replacement

FeBr3 + 3 KOH --> Fe(OH)3  + 3 KBr

Fourth reaction is single replacement:

CuSO4 + 2 Na  -->  Na2SO4  + Cu

Last reaction is combustion:

2 C6H14  +   19 O2  -->  12 CO2  + 14 HOH

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