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atroni [7]
3 years ago
11

Ionic salts are used for melting ice on roads for two reasons: they are effective at lowering the freezing point when they disso

lve in the water and they sometimes release heat when they dissolve in the water.
The heat of solution depends on the energy involved in breaking apart the salt and the energy involved in dissolving the ions in water (hydration). The enthalpy of hydration for each ion depends on the strength of the intermolecular force between the ion and water, which is electrostatic and follows Coulomb's law.
Rank the following in order of their predicted ability to melt ice due to their heat of solution:
1 = best at melting ice; 3 = worst at melting ice
A. NaCl
B. KCl
C. CaCl2
Chemistry
1 answer:
Anuta_ua [19.1K]3 years ago
3 0

Answer:

CaCl2=1

KCl=3

Explanation:

CaCl2 has a very high heat of solution hence it is best at melting ice. It is better than all the other salts mentioned. Its dissolution in water produces a lot of heat which melts the ice.

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Nitella [24]

it means basically the same thing but can be used in different context. like if someone says, "lets diffuse the situation." it means lets separate it and find out what's going on with it. Like if you don't understand a sentence when you were younger your teacher would tell you to break down the sentence, and try to use context clues. What you are doing is diffusing the sentence so that your not looking at it as one big confusing sentence, your "breaking it down" and that helps you a lot. I hope I helped you, if not let me know and I can diffuse the topic a little more to make it more approachable and easy to understand. :)

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3 years ago
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Answer:

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2 years ago
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How does the freezing and boiling point of ocean water compare to those of distilled water?
vichka [17]
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8 0
3 years ago
1. What is the Charlotte?<br> A. A train<br> B. A car<br> D. An airplane<br> C. A ship
dybincka [34]

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4 0
2 years ago
CO_2 sublimes readily at 25°C. Which properties are usually associated with a compound that undergoes this kind of change?
antoniya [11.8K]

Explanation:

Sublimation is defined as a process in which solid state of a substance directly changes into vapor or gaseous state without undergoing liquid phase.

For example, naphthalene balls show sublimation at room temperature.

As this process does not cause any change in chemical composition of a substance. Hence, it is known as a physical process.

Similarly, when CO_{2} sublimes readily at 25^{o}C. This shows change in physical state of carbon dioxide is taking place, i.e, from solid to gaseous phase.

Thus, we can conclude that when CO_{2} sublimes readily at 25^{o}C then it means physical properties are usually associated with a compound that undergoes this kind of change.

4 0
2 years ago
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