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Leto
4 months ago
10

A sample of neon gas at STP is allowed to expand into an evacuated vessel. What is the sign of work for this process?

Chemistry
1 answer:
Alekssandra [3K]4 months ago
3 0

Answer:

The work done in this process will be considered Negative.

Explanation:

The energy transferred by the system to the environment is negative

Therefore, if work is done on the system, it is labeled as positive. Conversely, when work is done by the system, it is regarded as negative.

In this scenario, the argon gas is expanding, and the work is exerted by the system into the surroundings (container), making the sign Negative.

Thus, the result for the work pertaining to this process will carry a Negative sign.

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Select the atoms or ions drawn with valid Lewis dot structures. A) A carbon has a dot on top, right, bottom and to the left.a ni
KiRa [2933]
Answer:

B, C

Explanation:

The Lewis dot structures that are valid are for B and C.

Regarding A;

The Lewis representation of carbon is correct. Each of the four dots symbolizes the four valence electrons.

However, the nitrogen with a single dot above, to the left, and below and a -3 charge isincorrect. For it to have a -3 charge, it must possess 8 Lewis dots (two on each side).

The nitrogen showing four dots (on top, right, bottom and left) is incorrect.

In B;

An oxygen having two dots positioned above and below with one dot on both sides is correct , as the 6 dots indicate oxygen's valence electrons.

In C;

A carbon shows two dots at each position and has a charge of +4. This is correct because the charge reflects that it has gained four electrons giving it 8 valence electrons.

In D;

An oxygen shows two dots above, to the left and below, with a charge of -2. This is incorrect as not all Lewis dots are present. Two are missing.

6 0
3 months ago
Given the formula: what is a chemical name of this compound? propane propanal propanol propanone
Alekssandra [3086]
1) The chemical formula for propane is CH₃-CH₂-CH₃. 
Propane is classified as a three-carbon alkane (acyclic saturated <span>hydrocarbon).
</span>2) The chemical formula for propanal is CH₃-CH₂-CH=O.
Propanal <span> is a </span>saturated<span> three-carbon </span>aldehyde (consists of<span> a </span>carbonyl<span> center).
3) </span>The chemical formula for propanol is CH₃-CH₂-CH₂-OH.
1-propanol <span> is a </span><span>primary alcohol.
4) </span>The chemical formula for propanone is (CH₃)₂-C=O.
Propanone, also known as acetone, is <span>the simplest and smallest</span> ketone.
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Pyridine rings can also under electrophilic aromatic substitution. given 2-methoxypyridine below, draw the expected major produc
alisha [2963]
Co2 is indeed the correct answer, my friend.
8 0
2 months ago
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