A substance is considered more efficient at storing energy when its specific heat enables it to resist changes in temperature. S
2 answers:
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1 - a, 2-b, 3-d, 4 - e
<u>Explanation:</u>
<u></u> - 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.