Question

1) _Ca + _HB - - - > 2)_Au + _HBr - - - >3)_Na + _H2PO4 - - - >4)_Ag+ _HCl - - - >5)_ Zn + _HI - - - >6) _Na + _HI - - - >7) _Al + _HI - - - >8)_Hg + _HCl - - - >9) _Cu + _H3PO4 - - - >​

Answer 1

Ответ:

1) _Ca + 2HB - - - >СaBr2+H2

2)2Au + 2HBr - - - >3AuBr+H2

3)2Na + 2H3PO4 - - - >2Na3PO4+3H2

4)2Ag+ 2HCl - - - >2AgCl+H2

5)_ Zn + 2HI - - - >Znl2+H2

6) 2Na + 2HI - - - >2Nal+H2

7) 2Al + 6HI - - - >2All3+3H2

8)2Hg + 2HCl - - - >2HgCl+H2

9) 3Cu + 2H3PO4 - - - >Cu3(PO4)2+3H2

Answer 2

It seems like you want to balance chemical equations by filling in the missing coefficients for the reactants and products. To balance these chemical equations, you need to make sure that there are an equal number of atoms of each element on both sides of the equation. Here are the balanced equations:

1. Ca + 2HBr → CaBr2 + H2
2. 2Au + 6HBr → 2AuBr3 + 3H2
3. 2Na + H2PO4 → 2NaH2PO4
4. Ag + HCl → AgCl + H2
5. Zn + 2HI → ZnI2 + H2
6. 2Na + 2HI → 2NaI + H2
7. 2Al + 6HI → 2AlI3 + 3H2
8. Hg + 2HCl → HgCl2 + H2
9. 3Cu + 2H3PO4 → 3CuH2PO4 + 3H2

These equations ensure that the same number of each type of atom appears on both sides of the reaction arrow.