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lbvjy [14]
3 years ago
10

Select the correct answer.

Chemistry
1 answer:
Zarrin [17]3 years ago
4 0

Answer:

C.

Explanation:

A. C - 6 electrons - 1s2 2s2 2p2

B. O - 8 electrons - 1s2 2s2 2p4

C. N - 7 electrons - 1s2 2s2 2p3

D. Be - 4 electrons - 1s2 2s2

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Aniline is more basic than cyclohexylamine because: (A) electrons on the aniline nitrogen are somewhat delocalized into the arom
Nady [450]

Answer:

The correct answer is A electron on the aniline nitrogen are somehow delocalized to the aromatic ring.

Explanation:

The structure of aniline contain double bonds and lone pair of electron in the nitrogen atom of -NH2 group that is attached to the benzene ring.

  The electron pair present in the nitrogen atom of -NH3 group of aniline undergo delocalization with the aromatic ring of benzene resulting in the formation of resonance hybrid that increases the ability of nitrogen atom of -NH2 group of aniline to easily donate that lone pair of electron.

 ON the other hand the resonance stabilization cannot be possible with the cyclohexylamine ring as it is saturated.

3 0
4 years ago
Substances like neon , which is a gas at room temperature and pressure, can often be liquified or solidified only at very low te
marshall27 [118]

Answer:

Condenses at 27.25K.

Freezes at 24.65K.

Explanation:

In order to solve this above question, there is is need to make use of the following equation. The main idea here is to convert degree celsius to Kelvin. Hence,

0°C + 273.15 = 273.15K---------------------(1).

Therefore, we will make use of the above equation (1) and slot in the values for at degree celsius at which it condenses and at degree celsius at which it freezes.

So, we have at temperature at which it condenses:

-245.9°C + 273.15 = 27.25K.

Also, we have at temperature at which it freezes.

-248.5°C + 273.15 = 24.65K.

8 0
3 years ago
How many moles are in 16.0 grams of O2?
Naddika [18.5K]
1.0006 moles O2


To solve for moles to grams, you use the molar mass (from the periodic table, so for oxygen it is 15.999 grams) to solve for moles this you set up the equation like this:
6 0
3 years ago
Respitory system is responsible for the exchange of oxygen in conjunction with which other system to control breathing in humans
tester [92]
Respiratory system and circulatory system both are responsible to control the breathing in Human body.
3 0
4 years ago
Given the law of conservation of energy, what happens when a 200°C iron bar is placed in thermal contact with a 30°C block of wo
ra1l [238]

Answer:

A Energy leaves the iron bar and enters the wood until the temperature are equal.

Explanation:

According to the law of conservation of energy or the first law thermodynamics energy neither be created nor destroyed, energy is transferred from one form to another form.

5 0
4 years ago
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