Solution of problem 629 of the collection of general ch

If the total amount of your purchases from the seller Михаил_Перович more than:
- 20383 ₽ the discount is 15%
- 10191 ₽ the discount is 10%
- 5096 ₽ the discount is 7%
- 2038 ₽ the discount is 5%
- 1019 ₽ the discount is 3%
- 510 ₽ the discount is 2%
- 102 ₽ the discount is 1%

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629. Complete the reaction equations:

A) KI + Fe2 (SO4) 3 → I2 +

B) KI + CuCl2 → CuCl +

C) SnCl2 + HgCl2 → Hg2Cl2 +