Ответы и объяснения

2013-05-06T06:45:14+00:00

2HCl + Zn = ZnCl2 + H2
H2SO4 + 2NaOH = Na2SO4 + 2H2O
2HgO = 2Hg + O2
2Ca + O2 = 2CaO

  • Rik2
  • новичок
2013-05-06T06:52:53+00:00

2hcl + zn = zncl2 + h2.
h2so4 + 2naoh= na2so4 + 2h2O
2hgo = 2hg + o2
2Ca + o2 = 2Cao