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CBSE Class 9 Answered

chlorophyll the green colouring matter of plant responsible for photosynthesis contain 2.64% of magnesium by mass.Calculate number of magnesium atom in 2.00g of chlorophyll
Asked by sourav gaungly | 19 Feb, 2011, 06:39: PM
Expert Answer
100 gms of chlorophyll contain 2.64 grams of Mg
1 gram of chlorophyll contain 0.0264 grams of Mg
2 gm of chlorophyll contain 0.0264 x 2 = 0.0528 grams of Mg
Number of atoms =( 0.0528/24) X 6.022 X 10 23
= 0.022 X 6.022 X 10 23
= 1.32484 X 10 22
Answered by | 20 Feb, 2011, 09:32: PM
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