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8090 [49]
3 years ago
7

Which of the following does not correctly describe Sn2 reactions of alkyl halides? A) The mechanism consists of a single step wi

th no intermediates. B) Tertiary halides react faster than secondary halides. C) The transition state species has a pentavalent carbon atom. D) Rate of reaction depends on the concentrations of both the alkyl halide and the nucleophile.
Chemistry
1 answer:
Rashid [163]3 years ago
7 0

Answer:

The correct answer is B the tertiary halides reacts faster than primary halides.

Explanation:

During SN2 reaction the nucleophile attack the alkyl halide from the opposite side resulting in the formation of transition state in which a bond is not completely broken or a new bond is not completely formed.

   After a certain period of time the nucleophile attach with the substrate by substituting the existing nuclophile.

  An increase in the bulkiness in the alkyl halide the SN2 reaction rate of that alkyl halide decreases.This phenomenon is called steric hindrance.

  So from that point of view the that statement tertiary halides reacts faster that secondary halide is not correct.

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Explanation:

Radicals are so reactive because they require so much energy to form.

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3 years ago
Which law states that the volume and absolute temperature of a fixed quantity of gas are directly proportional under
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Answer:

O Charles's law .

Explanation:

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In this case, since the use of gas laws leads to a good comprehension of how gases behave towards volume, pressure and temperature, we can review that the Boyle's law explains the pressure-volume variation, the Dalton's law the partial pressure effect, the Gay-Lussac's law that of pressure and temperature and the Charles' that of temperature and volume at constant pressure; thus, the answer for the asked question is:

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8 0
2 years ago
33 grams of NH4NO3 will produce how many grams of water
Leni [432]

Answer:

66 grams

Explanation:

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3 years ago
On the periodic table, calcium is in group 2. What is true about calcium?
Ray Of Light [21]

Answer:

Explanation:

Calcium is all around us. The average human contains approximately 1kg of calcium, of which 99% is stored in our bones. It is the 5th most abundant element in the earth's crust, occurring widely as calcium carbonate which is more commonly known as limestone. It is also the fifth most abundant dissolved ion in seawater.

6 0
3 years ago
Indicate the number of significant figures in the measured number 0.0020 <br> A. 4<br> B. 5<br> C. 2
Sergio [31]

<u>Answer:</u>

The correct answer option is C. 2.

<u>Explanation:</u>

We are given the number '0.0020' and we are to indicate the number of significant figures in the given measured number.

According to the rules of significant figures, numbers that are non-zero, zeros between any two significant numbers and the ending zeros in the decimal position are categorized as significant figures.

Since there is one non-zero number and one ending zero in the decimal position, therefore 0.0020 has 2 significant figures.

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