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Can someone plez relate and explain me the ~>atomic mass and isotops`s percentage abundance? With example

Can someone plez relate and explain me the ~>atomic mass and isotops`s percentage abundance? With example

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Grade:11

1 Answers

Umakant biswal
5359 Points
5 years ago
@ sakshi 
if u have given the mass of each isotope of an element and the average atomic mass , then u can calculate the percentage abundance of isotope , 
let x be one of the abundances , and the other abundance is 1-x , equate that to the atomic weight and use besic algebra to solve it , 
for example 
suppose nitrogen is made up of two isotopes N-14 AND N-15 , ,, ATOMIC WEIGHT IS 14.007 , we have to calculate the percentage abundance . 
14.003* x+ (15.000)*(1-x) =14.007 
and the trick here is both the abundance will must have to add up and the value will be 1 . (REMEMBER THIS TRICK ) 
AND BY THAT U CAN GET THE PERCENTAGE ABUNDANCE . (USE BESIC ALGEBRA TO SOLVE FOR X ) 
HOPE IT CLEARS YOUR DOUBT REGARDING CALCULATION OF PERCENTAGE ABUNDANCE . 
IF SO, THEN PLZZ APPROVE MY ANSWER . 
ANY MORE DOUBT , ASK IN THE FORUM . 
ALL THE BEST ..
 

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