Ответ:
2Na+ 2HCL=2NACL+H2
2K+S=K2S
2NaOH+H2SO4=Na2SO4+2H2O
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Ответ:
2Na+ 2HCL=2NACL+H2
2K+S=K2S
2NaOH+H2SO4=Na2SO4+2H2O