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3 years ago

How does a sample of helium at 15 degree Celsius compare to a sample of helium at 215 K?

2 answers:

Nadusha1986 [10]3 years ago

5 0

The answer is A.
215K is equivalent to -58.15 °C and temperature corresponds with the average kinetic energy.
So the 15°C has a higher energy level than 215K.

lara [203]3 years ago

5 0

Answer:

A) The helium at 15 degrees Celsius has a higher average kinetic energy that the sample at 215 K.

Explanation:

First, we must compare the two different temperatures in the same units. To convert Celsius into kelvin we must add it 273, so

K = °C + 273 = 15°C + 273 = 288K

And 288K > 215 K then 15°C > 215K

The increase of temperature in a gas sample causes an increase in the atom’s movement, i.e. the atoms move faster when they are heated and, for this reason, the kinetic energy of the system increases.

As helium at 15°C (288K) implies that has a higher temperature than helium at 215K, then its kinetic energy will be higher too.

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Answer:

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Explanation:

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In the experiment highlighted above, different masses of a substance were used, they were heated to different temperatures. The set up does not show any correlation between the masses of substances heated and the temperatures. It is even difficult to try to predict the hypothesis for this kind of experimental set up. All the variables in play can best be assumed to be independent of one another.

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3 years ago

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Answer:

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Neutrons: 26
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Explanation:

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Have a lovely rest of your day/night, and good luck with your assignments! ♡

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3 years ago

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Answer:

See explanation below

Explanation:

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The first step involves the reaction with the acid. The carbonile reacts with the acid and forms an alcohol there. The next step is the reaction of the alcohol, in this case, the methanol to form the hemi cetal. Then in the third step, we repeat the first step, using acid to turn the OH group into a great leaving group such water. Then the water leaves the molecule, leaving the space wide open in the next step for methanol, and the acetal is formed.

See picture for the curved arrow mechanism

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cupoosta [38]

The best and most correct answer among the choices provided by your question is the second choice.

<span>Based on the reaction given above, as the temperature decreases, the formation of the reactants will increase.</span>

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!

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