In which of these systems is the entropy decreasing?

1 answer:

8 0

"A gas condensing to a liquid" is the one system among the following choices given in the question where the entropy is decreasing. The correct option among all the options that are given in the question is the fourth option or option "D". I hope that this is the answer that has come to your desired help.

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Oxygen has an electronegativity of 3.5, and carbon has an electronegativity of 2.5. How is charge distributed on an oxygen atom

Aleksandr [31]

Answer:

The oxygen atom has a slightly negative charge.

Explanation:

3.5 - 2.5 = 1

For ionic bond electronegativity should be more than 1.6.

So, O and C do not have whole charge. Electronegativity of O more than C, so electrons slightly moved to the oxygen side.

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Which of the following black body curves is representative of stars like our sun?

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The answer is B
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What is the only nonmetal with four valence electrons?.

mamaluj [8]

Answer:

Carbon

Explanation:

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2 years ago

Draw an ether that contains exactly five carbon atoms and only single bonds

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Answer:

H3CH2COCH2CH2CH3

Ether:

Ether are organic compounds that contain ether functional group , in which oxygen atom is connected with two alkyl or aryl group.

They have general formula as follow

R---O---R or R'---O----R or R'---O---R'

while R = Alkyl

R' = Aryl

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3 years ago

The Lewis structures of both pyridine and pyrrole have an electron pair on the nitrogen atom, suggesting that both substances mi

Y_Kistochka [10]

Explanation:

Lone pairs are present on nitrogen atoms of both pyridine and pyrrole.

In pyrrole, the electron pair on nitrogen is involved in resonance and hence does not available for bonding. Therefore, pyrrole does not possess basic character and remains unreactive towards HCl.

In case of pyridine, as 6 pi electrons are present in the ring, so, electron pair of nitrogen does not participate in resonance. So, because of presence of lone pair, pyridine possess basic character and hence, reacts readily reacts with HCl.

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