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luda_lava [24]
2 years ago
9

10. A solution contains 130 grams of KNO3 dissolved in 100 grams of water When 3 more grams of KNO3 is added, none of it dissolv

es, nor do any additional crystals appear. The temperature of the solution is closest to
A.65 Celsius

B. 68 Celsius

C. 70 Celsius

D. 72 Celsius
Chemistry
2 answers:
krek1111 [17]2 years ago
6 0

Answer:

B. 68 Celsius

Explanation:

Murljashka [212]2 years ago
3 0

Answer:

Option B

Explanation:

We will check the solubility graph for potassium nitrate,  KNO 3. Based on the graph it can be said that the temperature of solution when 130 grams of KNO3 dissolves in 100 grams of water is near to 65 degree Celsius. Now if three grams of solute is increased then the temperature of the solution will increase by a degree or so and hence the most probable temperature would be 68 degree Celsius.

Hence, option B is correct

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Explanation:

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2 years ago
A sample of gas contains 0.1800 mol of CO(g) and 0.1800 mol of NO(g) and occupies a volume of 23.2 L. The following reaction tak
baherus [9]

Answer:

The volume of the sample is 17.4L

Explanation:

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Using Avogadro's law (States the moles of a gas are directly proportional to its pressure under constant temperature and pressure) we can find the volume of the products:

V1n2 = V2n1

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8 0
1 year ago
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Follows are the explanation to this question:

Explanation:

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Complete the statements by writing the number from the graph.
natima [27]

Answer: The substance is in the gas phase only in region 5

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