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boyakko [2]
3 years ago
11

How does solar radiation affect the thermosphere? explain

Chemistry
1 answer:
Mashutka [201]3 years ago
5 0
"The sun radiates radiation in the UV, visible and infra-red regions of the spectrum. <span>When this reaches earth, some is reflected off the atmosphere/ clouds back into space. However, some passes through. UV </span>radiation<span> ionises molecules in the </span>thermosphere<span>, and this is the cause of the aurora." Credits to Google

Happy studying!</span>
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Calculate the molality of a solution prepared by dissolving 175 g of KNO3 in 750 g of water. (round to nearest hundreth)
Wittaler [7]
We will get the molality from this formula:
Molality = no.of moles of solute / Kg of solvent 

So first we need the no.of moles of KNO3 = the mass of KNO3 / molar mass of KNO3
no.of moles of KNO3 = 175 / 101.01 = 1.73 mol
By substitution in the molality formula:
∴ molality = 1.73 / (750/1000) = 2.3 Molal

6 0
3 years ago
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Nuclear Chemistry Writing Assignment
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Adding energy to solid water will turn it into ?
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Answer:

Energy added to solid water will turn it into liquid water; add energy into liquid water and it will be turned into water vapor.

Explanation:

Adding energy is basically adding heat; the more heat, the more excited the molecules of H2O gets. In solid water, the molecules aren't really moving because they don't have a lot of energy, so it is solid. In liquid water (which is water in room temperature), it has a medium amount of energy; the molecules aren't stuck together but it isn't completely dispersed, so it is in liquid form. However, in water vapor, the energy becomes very high and the molecules are excited. The hydrogen bonds holding the molecules together break and the water is released as a vapor.

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2 years ago
When an ionic bond forms, the atom with the lower ionization energy will be most likely to lose an electron. True False
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The answer you are looking for should be true.
6 0
3 years ago
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A 50.0 mL sample of gas at 20.0 atm of pressure is compressed to 40.0 atm of pressure at constant temperature. What is the new v
guapka [62]

Ans: Final volume = 25.0 ml

<u>Given:</u>

Initial volume V1 = 50.0 ml

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Final pressure P2 = 40.0 atm

<u>To determine:</u>

The final volume V2

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under constant temperature, T and number of moles n we have:

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or, P1V1 = P2V2

V2 = P1V1/P2 = 20*50/40 = 25 ml.

6 0
3 years ago
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