Write the reaction products and arrange the coefficients: Al + O2 C + O2 H2O H2O + SO3 H2 + S H2O + 2Li

1) 4Al + 3O2 = 2Al2O3
2) C + O2 = CO2
3) H2O + SO3 = H2SO4
4) H2 + S = H2S
5) 2H2O + 2Li = 2LiOH + H2
Everything is easy, we just connect according to the rules, and arrange the coefficients (at the end and at the beginning there must be the same number of elements)



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