1.

Calculate the average atomic mass of carbon, if the natural abundance of C-12 and C-13 are 98.90% and 1.10% respectively.

Answer»

Solution :AVERAGE ATOMIC mass of CARBON
`=(12xx(98.9)/(100))+(13xx(1.1)/(100))`
`=(12xx0.989)+(13xx0.011)`
`=11.868+0.143="12.011 amu"`


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