Chlorophill contains 2.68% of mg by weight calculate the number of mg atoms in 2.00g of Chlorophill?
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Total mass of chlorophyll =2g
% of Mg in chlorophyll =2.68%
⇒ mass of Mg in 2g of chlorophyll =2× 2.68/100
Nuumber of magnesium atom (0.00536/24 )×(6.023×10²³ )
=1.345×10²⁰ atoms.
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