Answer:
Mass is a Physical quantity
Explanation:
It is a fundamental physical quantity because it cannot be derived from other physical quantities.
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Hope it helps
Answer:
D
Explanation:
All of the above are great examples!
<em>"Endothermic reactions are those which absorb heat during the reaction."</em>
Answer:
0.05 M
Explanation:
The reactions are the following:
AgCl (s) ⇄ Ag⁺(aq) + Cl⁻(aq)
(1)
Ag⁺(aq) + 2CN⁻(aq) ⇄ Ag(CN)₂⁻(aq)
(2)
The reaction of the solubility of AgCl in NaCN is:
AgCl (s) + 2CN⁻(aq) ⇄ Ag(CN)₂⁻(aq) + Cl⁻(aq)
0.1M - 2x x x
(3)
By introducing equation (2) and (1) into equation (3) we have:
This equilibrium constant is equal to:
(4)
<em>where x : is the molar solubility of the Ag(CN)₂⁻ and Cl⁻ and hence the molar solubility of AgCl in NaCN</em>
By solving equation (4) for x we have:
S = 0.05 M = [Ag(CN)₂⁻] = [Cl⁻]
Therefore, the molar solubility of AgCl in 0.10 M NaCN is 0.05 M.
I hope it helps you!