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Serhud [2]
3 years ago
11

When a kettle is placed on the stove and water begins to boil, the hotter water at the bottom begins to rise and the cooler wate

r above it begins to sink. What do we know about the relationship between the hotter water and the cooler water?
A. The hotter water is less dense.B. The hotter water has more radiation.C. The cooler water is less dense.D. The cooler water has more radiation.
Chemistry
2 answers:
Tomtit [17]3 years ago
6 0

a is the answer  the hotter water is less dense.


melisa1 [442]3 years ago
3 0
I think the correct answer from the choices listed above is option A. The fact that we know about the relationship between the hotter water and the cooler water would be that the <span> hotter water is less dense. Hope this answers the question. Have a nice day.</span>
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It seems the question is incomplete. However, this problem has been found in a web search, with values as follow:

" A certain substance X melts at a temperature of -9.9 °C. But if a 350 g sample of X is prepared with 31.8 g of urea (CH₄N₂O) dissolved in it, the sample is found to have a melting point of -13.2°C instead. Calculate the molal freezing point depression constant of X. Round your answer to 2 significant digits. "

So we use the formula for <em>freezing point depression</em>:

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So now we have all the required data to <u>solve for Kf</u>:

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Read 2 more answers
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