determine the average Atomic mass of Si which has three isotopes 28^ Si , 29^ Si and 30^ Si with natural abundances of 92.23%, 4.67%and 3.10% respectively ?
Answers
Answered by
3
Answer:
The abundance of Si-28 is 92.23%. Si-29 is 4.68% and Si-30 is 3.09%.
Because most Si atoms have a mass of 28 amu, the average mass of all silicon atoms is very close to 28.
Answered by
6
Answer:
This is very first it seams to be difficult but is very easy
First
²⁸Si = 92.23%
= 28 × 9223/10000
= 25.82u
Second
²⁹Si = 4.67%
= 29 × 467/10000
=1.35u
Third
³⁰Si = 3.10%
= 30 × 310/10000
=0.93u
Similar questions