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Which of the following reactions obeys the Law of Conservation of Atoms? H20 - H2 + O2 CuSO4 + Zn - ZnCl2 + Cu Zn + HCI – ZnCl2 + H2 PbCl2 + Al - AlCl3 + Pb - Zn + 2HCI - H2 + ZnCl2
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Which of the following reactions obeys the Law of Conservation of Atoms?

H20 - H2 + O2
CuSO4 + Zn - ZnCl2 + Cu
Zn + HCI – ZnCl2 + H2
PbCl2 + Al - AlCl3 + Pb -
Zn + 2HCI - H2 + ZnCl2

User Mischa Arefiev
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Zn + 2HCl => H_2\uparrow + ZnCl_2

there are 1 atom of Zn, 2 atoms of H and 2 atoms of Cl

User Spauny
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