Question

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Answer 1

Ca(OH)2 + 2 HNO3 → Ca(NO3)2 + 2 H2O

H2 + F2 → 2 HF

2 Al + 3 H2SO4 →= Al2(SO4)3 + 3 H2

3 CaCO3 + 2 H3PO4→Ca3(PO4)2 + 3 H2CO3

Na2O + H2O →2 NaOH

4 K + O2 → 2 K2O

Zn + 2 HCl →º ZnCl2 + H2

Cl2O7 + H2O →2 HClO4

N2O5 + H2O → 2 HNO3