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slega [8]
3 years ago
10

Calculate the heat energy released when 24.1g of liquid Mercury at 25 degrees celsius is converted to solid? mercury.; Steve I g

ot that answer wrong. I have to convert grams to moles, find heat released in freezing and cooling and then add the amount of heat released Heat capacity for Hg(l)=28.0J/mol-K enthalpy of fusion: 2.29 kJ/mol
Chemistry
1 answer:
harkovskaia [24]3 years ago
7 0
M<span>olar mass Hg = 200.5920g/mol </span>
<span>Hg = 24.1/200.5920 = 0.120mol </span>

<span>234.32K liquid to 25C (298.15K) liquid </span>
<span>h = (0.120)(28.0)(298.15 - 234.32) = 214.4688 J </span>

<span>234.32K liquid to 234.32K solid </span>
<span>h = (0.120)(2.29) = 0.2748 kj </span>

<span>total heat = 0.2145 + 0.2748 = 0.4893 kJ</span>
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Explanation:

At each reflecting surface (benzene and glass) there will be 180 degree phase change.

Now, for constructive interference the optical path in benzene is \lambda.

Formula to calculate thickness of a benzene thin film is as follows.

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Hence, substituting the given values into the above formula as follows.

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