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  • 16.26 milligram of sample of an element “X” contains 1.66x1020 atoms. What is the atomic mass of element “X”?

16.26 milligram of sample of an element “X” contains 1.66x1020 atoms. What is the atomic mass of element “X”?

Answers (1)

I hope thats not 1020, but 
So, 1.66 x  atoms weigh 16.26 milligram
1 atom will weigh  milligram
So, 6.022 x  atoms weigh  * 6.022 x 
So, the weight will be 58.986 * 1000 milligrams = 58.986 grams.
Hence the atomic weight of the atom of the Element x is around 59 grams.

Posted by

Ankit Dutt

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