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stepladder [879]
3 years ago
7

Plsssssss! help! 20 points

Chemistry
1 answer:
Evgen [1.6K]3 years ago
5 0

Answer:

Explanation:

molecular weight of N₂H₄ is as follows

2 x 14 + 4 x 1 = 32

so 32 gram of N₂H₄  is equal to one mole of N₂H₄

25 gram of  N₂H₄ will be equal to 25 / 32 mole of  N₂H₄

so numerical quantity needed to convert grams of  N₂H₄  to mole is

1 / 32 or .03125 . This number needs to be multiplied with grams of N₂H₄

to convert it to number of moles.

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Answer:

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Explanation:

From;

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t1/2 = half life of  C-14

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From the question, N = 0.2 No

Hence;

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4 0
3 years ago
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Lera25 [3.4K]

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4 years ago
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Answer:

D. that the nucleus is located at the center of the atom

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In the given question according to the information the process of polymerization is an addition polymerization.

<h3>What is polymerization?</h3>

Polymerization is a process in which addition of many small molecules takes place for the formation of a large three dimensional substance known as polymer.

In the polymerization of polyethene the small repeating molecule is ethene and in this process product formed due to the addition process to the double bond of the ethene.

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