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ZanzabumX [31]
3 years ago
15

5. Which of the following is NOT a colligative property of a solution? (1 point) boiling point elevation supersaturation vapor p

ressure lowering freezing point depression 6. A solute depresses the freezing point because the solute ____. (1 point) is colder than the solvent disrupts crystal formation of the solvent disrupts crystal formation of the solvent tends to sink to the bottom of the solution has bigger molecules than the solvent 7. How many milliliters of alcohol are in 167 mL of an 85.0% (v/v) alcohol solution? (1 point) 252 mL 228 mL 145 mL 142 mL
Chemistry
1 answer:
LUCKY_DIMON [66]3 years ago
3 0
142 ml
that is the anwser
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You can practice converting between the mass of a solution and mass of solute when the mass percent concentration of a solution
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<u>Answer:</u> The mass of solution having 768 mg of KCN is 426.66 grams.

<u>Explanation:</u>

We are given:

0.180 mass % of KCN solution.

0.180 %(m/m) KCN solution means that 0.180 grams of KCN is present in 100 gram of solution.

To calculate the mass of solution having 768 mg of KCN or 0.786 g of KCN   (Conversion factor:  1 g = 1000 mg)

Using unitary method:

If 0.180 grams of KCN is present in 100 g of solution.

So, 0.768 grams of KCN will be present in = \frac{100g}{0.180g}\times 0.768=426.66g of solution.

Hence, the mass of solution having 768 mg of KCN is 426.66 grams.

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