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3 years ago

ΔU for a van der Waals gas increases by 475 J in an expansion process, and the magnitude of w is 93.0 J.

Chemistry

1 answer:

timofeeve [1]3 years ago

6 0

Complete question:

ΔU for a van der Waals gas increases by 475 J in an expansion process, and the magnitude of w is 93.0 J. calculate the magnitude of q for the process.

Answer:

The magnitude of q for the process 568 J.

Explanation:

Given;

change in internal energy of the gas, ΔU = 475 J

work done by the gas, w = 93 J

heat added to the system, = q

During gas expansion process, heat is added to the gas.

Apply the first law of thermodynamic to determine the magnitude of heat added to the gas.

ΔU = q - w

q = ΔU + w

q = 475 J + 93 J

q = 568 J

Therefore, the magnitude of q for the process 568 J.

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One molecule of glucose makes 36 molecules of atp how many molecules of glucose are needed to make 1800 molecules of atp

pogonyaev

You would need exactly 50 molecules of glucose.

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4 years ago

Refer to the periodic table tool and write the electron configurations of the following elements in both long and short terms

ahrayia [7]

Answer:-

Carbon

[He] 2s2 2p2

1s2 2s2 2p2.

potassium

[Ar] 4s1.

1s2 2s2 2p6 3s2 3p6 4s1

Explanation:-

For writing the short form of the electronic configuration we look for the nearest noble gas with atomic number less than the element in question. We subtract the atomic number of that noble gas from the atomic number of the element in question.

The extra electrons we then assign normally starting with using the row after the noble gas ends. We write the name of that noble gas in [brackets] and then write the electronic configuration.

For carbon with Z = 6 the nearest noble gas is Helium. It has the atomic number 2. Subtracting 6 – 2 we get 4 electrons. Helium lies in 1st row. Starting with 2, we get 2s2 2p2.

So the short term electronic configuration is [He] 2s2 2p2

Similarly, for potassium with Z = 19 the nearest noble gas is Argon. It has the atomic number 18. Subtracting 19-18 we get 1 electron. Argon lies in 3rd row. Starting with 4, we get 4s1.

So the short electronic configuration is [Ar] 4s1.

For long term electronic configuration we must write the electronic configuration of the noble gas as well.

So for Carbon it is 1s2 2s2 2p2.

For potassium it is 1s2 2s2 2p6 3s2 3p6 4s1

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3 years ago

2. Water can be understood as both yin and yang. Challenge: how many ways can you explain why ?

GuDViN [60]

Water can be understood as both yin and yang. The number of ways Yin and Yang can be explained is in numerous ways.

Yin and Yang explain how to exist in harmony and in balance with nature. Yin and Yang are not distinct entities, but rather two extremes of a spectrum. Everything Yin includes a trace of Yang. Also, everything Yang contains a trace of Yin. They are always in connection with one another.

The yin is the physical aspect of nature and the yang is the forces surrounding these physical aspects.

Some of the ways in which Yin and Yang can be explained are as follows:

Yin and Yang can be explained from the water, whereby the water is the Yin while the wind carrying the water waves is known as the Yang.

In the body, the Yin shows the anatomy and structure of the body while the Yang explains the psychological functioning of the body.

Disruption in either Yin or Yang can cause an imbalance in nature.

Therefore, we can conclude that the number of ways in which we can explain the Yin and the Yang is numerous.

Learn more about nature here:

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