Answer: The molarity of silver nitrate in the diluted solution is 0.015 M
Explanation:
Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.
According to the dilution law,
where,
= molarity of concentrated solution = 0.150 M
= volume of concentrated solution = 10.0 ml
= molarity of diluted solution = ?
= volume of diluted solution = 100.0 ml
Thus the molarity of silver nitrate in the diluted solution is 0.015 M
Compounds are pure substances made of different kinds of atoms chemically bonded together. Briefly discuss the difference between an element and a compound. An element is a pure substance and it's made on only kind of atom. A compound is a pure substance made of two or more elements that are combined chemically.
ΔG⁰ = ΔH⁰ - TΔS
ΔH⁰ = Hf,(CH₃OH) - Hf,(CO) = -238.7 + 110.5 = -128.2 kJ/mol
ΔS = S(CH₃OH) - S(CO) - 2S(H₂) = 126.8 - 197.7 - 2 x 130.6 = -332.1 J/mol.K
So
ΔG⁰ = - 128200 + 332.1 T
For the reaction to be spontaneous:
ΔG⁰ < 0
So: -128200 + 332.1 T < 0
332.1 T < 128200
T < 386.028 K
Answer:
Another eight cups of pure water will be required.
Explanation:
Start by calculating the amount (in cups) of vinegar in these six cups:
- One cup of vinegar-water solution would contain cups of vinegar.
- Two cups of vinegar-water solution would contain cups of vinegar.
- Three cups of vinegar-water solution would contain cups of vinegar.
Therefore, if these six cups of solutions were mixed, the mixture would contain cups of vinegar. Also, the mixture is supposed to have a volume of six cups. Therefore, the concentration of this six-cup mixture would be:
.
In other words, if these six cups of vinegar-water solutions are mixed, it would be necessary to dilute (by adding more water) before reaching the concentration of .
The goal is to dilute this solution with cups of vinegar to a concentration of . Consider: what would be the volume the solution after dilution?
The volume of a solution can be found from the quantity and concentration of its solute:
- Quantity of vinegar in this solution: cups.
- Concentration of vinegar in this solution: .
After dilution, the volume of this solution would be:
.
At this moment, this solution only has a volume of six cups. Therefore, cups of pure water will be required.
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