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8090 [49]
2 years ago
9

The heat of vaporization of an unknown liquid is 1,340 Joules per gram. What is the minimum number of Joules needed to change 20

.0 grams of the liquid to vapor at the boiling point?
Chemistry
1 answer:
Fed [463]2 years ago
7 0

Answer:

The temperature of a boiling liquid remains constant until all of the liquid has been converted to a gas.For example, the amount of heat necessary to change one gram of water to steam at its boiling point at one atmosphere of pressure,  the heat of vaporization of water, is approximately 540 calories.

Explanation:

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Calculate the ph of a solution formed by mixing 200.0 ml of 0.30 m hclo with 300.0 ml of 0.20 m kclo. the ka for hclo is 2.9 × 1
masha68 [24]

Answer:

The pH of the solution will be 7.53.

Explanation:

Dissociation constant of KClO=K_a=2.8\times 10^{-8}

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Then in 300 ml = 0.20 M\times 0.300 L=0.06 M

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The pH of the solution will be given by formula :

pH=pK_{a}^o+\log\frac{[salt]}{[acid]}

pH=-\log[2.8\times 10^{-8}]+\frac{[0.06 M]}{[0.06 M]}

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Answer:

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Explanation:

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