Answer:therefore the oxidation state of sulphur is +6 in the compound CaSO4.
Explanation:
Electrons and protons
Answer:A
Answer:
Al2O3 + 6HCl --> 2AlCl3 + 3H2O
Explanation:
Al: 2
O: 3
H: 6
Cl: 6
Balanced on both sides.
1 - a, 2-b, 3-d, 4 - e
<u>Explanation:</u>
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- Separated by 6M HCl
Silver and aluminum ions can be separated using the acid, 6M HCl.
- Separated by H₂S
Copper and Calcium ions can be separated by the reagent hydrogen sulfide, H₂S.
- Separated by (NH₄)₂HPO₄ in NH₃
Magnesium and Potassium ions can be separated by the reagent Ammonium hydrogen phosphate in ammonia.
- cannot be separated
Nickel and Cobalt ion cannot be separated by the reagents given at all.