Need chemistry help with combustion reactions
1 which of the following is a combustion reaction
4Fe + 3O2——-> 2Fe2O3
2Al+ N2——–> 2AlN
2AgNO3 + H2S——->Ag2S +2NHO3
2H2O—–>2H2+O2
2 what must methane be combined with to undergo a combustion reaction
energy
oxygen
hydrogen
carbon dioxide
3 when wood burns in the prescence of pxygen in what form is energy released
hydrogen
heat and light
more oxygen
water vapor
4 most of the substance we use for fuel are hydrocarbons that burn easily in the presence of oxygen which 2 elements are found in these substances
carbon and oxygen
hydrogen and carbon
hydrogen and oxygen
5 which of the following generalized equations represent a combustion reaction
A + oxygen—> energy
A+B—>AB
fuel+ energy—>oxygen
AB—>A+B