1.

Weighing 3104 carats (1 carat=200mg), the Cullinan diamondwas the largest natural diamond ever found. How many carbain atoms were present in the stone?

Answer»

Solution :Mass of the STONE
=3104`xx`200=620800mg=620.8g .
NUMBER of ATOMS of carbon
`=("Mass in gram")/("Gram-atomic mass")xx6.023xx10^(23)` LTBR. `=(620.8)/(12)xx6.023xx10^(23)=3.12xx10^(25)`


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