October 2018 1 42 Report
Clasifico las siguientes reaccines quimicas segun el tipo ,ya sea en reaccion de descomposicion o en sustiyucion
Zn+2HCl---->ZnCl2+H2+calor....
SO3+H2O----->H2SO2
HCl+NaOH--->NaCl+H2O..
2H2O+CALOR--->2H2+O2..
2Ca+O2--->2CaO2..
2Kl+PbCrO4--->K2CrO4+Pbl

porfa es urgente...

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