1. 96% www.fptl.ru H 2 SO 4 93% CO 2 2. Na 2 CO 3 14% . H2 O 3. . . 4. . . Fe H2 O 5. NH 4 Cl 6. Na 2 CO 3 7. 8. 87% Na 2 S 2 O 4 . - 9. 10. H2 O H2 O 11. - -2 .
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