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Zn-64 = 48.63%

Zn-66 = 27.90%
Zn-67 = 4.10%
Zn-68 = 18.75%
Zn-70 = .62%
Calculate the atomic mass/given their percent abundance

User CPPL
by
9.0k points

1 Answer

5 votes

Answer:

A = 65.46 u

Step-by-step explanation:

Given that,

The composition of zinc is as follows :

Zn-64 = 48.63%

Zn-66 = 27.90%

Zn-67 = 4.10%

Zn-68 = 18.75%

Zn-70 = .62%

We need to find the average atomic mass of the given element. It can be solved as follows :


A=(48.63* 64+27.90* 66+4.1* 67+18.75* 68+0.62* 70)/(100)\\A=65.46\ u

So, the average atomic mass of zinc is 65.46 u.

User Cawecoy
by
8.4k points
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