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cluponka [151]
3 years ago
11

Calculate the average atomic mass for an imaginary element "E" that has the following isotope abundances:

Chemistry
1 answer:
galben [10]3 years ago
3 0

Answer:

Average atomic mass of E = 103.57 amu

Explanation:

Given data:

Average atomic mass of E = ?

Abundance of E-102.658 = 56.67%

Abundance of E-104.770 = 43.33%

Solution:

Average atomic mass of E = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass)  / 100

Average atomic mass of E = (56.67×102.658)+(43.33×104.770) /100

Average atomic mass of E =  5817.63 + 4539.68 / 100

Average atomic mass of E = 10357.31 / 100

Average atomic mass of E = 103.57 amu.

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4 years ago
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SpyIntel [72]

Answer:

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Explanation:

Given:

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Percent yield

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⇒ Percent yield = [Actual yield / Theoretical yield] 100%

⇒ Percent yield = [36 / 45] 100%

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⇒ Percent yield = 80 %

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