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Chlorophyll the green colouring matter of plant contains 2.68% of magnesium. Calculate the number of atoms of Mg in 2g of Chlorophyll.
Dear Chanchal,
since chlorophyll contains 2.68% Mg therefore weight of Mg in 2g chlorophyll = 2×2.68/100 = .0536 g
now Mole of Mg = weight/atomic weight
= .0536/24
since 1 mole contains 6.023×10^23 particles
therefore number of atoms present in .0536/24 mole will be = (.0536/24) × 6.023×10^23
=1.34 × 10^23 atoms of Mg
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YOUR NAME
Abhishek Jain
AskiitiansExpert-IITD
the no. of mg atoms in 2g of chlorophyll =1300000000000000000000 atoms
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