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masha68 [24]
3 years ago
14

Chlorine has two isotopes, 35Cl and 37Cl; 75.77 % of chlorine is 35Cl and 24.23 % is 37Cl. The atomic mass of 35Cl is 34.969 amu

and the atomic mass of 37Cl is 36.966 amu . What is the atomic weight of chlorine?

Chemistry
2 answers:
olasank [31]3 years ago
6 0

Answer: the atomic weight of chlorine is 35.5

Explanation:Please see attachment for explanation

storchak [24]3 years ago
3 0

Answer:

35.4528731 amu

Explanation:

To appropriately get the atomic mass unit of chlorine, we can get the answer using the masses from the isotopes. This can be obtained as follows. What we do is that we multiply the percentage compositions by the masses.

Now let’s do this.

[75.77/100 * 34.969] + [24.23/100 * 36.966]

= 26.4960113 + 8.9568618 = 35.4528731

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