1. An ionic compound contains H → 3.17 %, N → 11.11 %, Cr → 41.27 %, O → 44.44 % and relative formula mass 252. Identify the compound with chemical name and formula.
2. An iron compound contains Fe → 38.36 %, C → 12.33 %, O → 49.32 % and relative formula mass 292. Identify the compound with chemical name and formula.
3. An aluminium compound contains Al → 9.73 %, Cl → 38.38 %, O → 51.89 % and relative formula mass 277.5 . Identify the compound with chemical name and formula.
4. A chromium compound contains Cr → 26.53 %, S → 24.49 %, O → 48.98 % and relative formula mass 392. Identify the compound with chemical name and formula.
5. A sodium compound contains Na → 36.51 %, S → 25.40 %, O → 38.10 % and relative formula mass 126. Identify the compound with chemical name and formula.
6. A copper compound contains Cu → 41.03 %, N → 17.95 %, O → 41.03 % and relative formula mass 156. Identify the compound with chemical name and formula.
7. A potassium compound contains H → 1 %, C → 12 %, K → 39 %, O → 48 % and relative formula mass 100. Identify the compound with chemical name and formula.
8. A hydrated copper compound contains Cu → 25.60 %, S → 12.80 %, H → 4 %, O → 57.6 % and relative formula mass 250. Identify the compound with chemical name and formula.
9. A hydrated zinc compound contains Zn → 26.75 %, H → 2.47 %, N → 11.52 %, O → 59.26 % and relative formula mass 243. Identify the compound with chemical name and formula.
10. A hydrated magnesium compound contains Mg → 9.76 %, S → 13 %, H → 5.69 %, O → 71.54 % and relative formula mass 246. Identify the compound with chemical name and formula.
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