Question

@ Chlorophyll the green colouring matter of plant
responsible for photosynthesis contains 2.68% of
magnesium by weight Calculate the number of magnesium atom in 4g of chlorophyll​

Answer 1

Answer:

Explanation:

We Know that,

Mass of chlorophyll = 4 g

Percentage of Mg given = 2.68 %

Mass of Mg in 4 g of chlorophyll = 2.68 x 4/100 = 0.054 g

6.023 X 10 power 23 atoms of magnesium = 24 g

24 g of Mg contains = 6.023 × 10 power 23 atoms

0.054 g of Mg contains = x

x = (6.023 × 10 power 23 × 0.054)/ 24

x = 0.250958333 × 0.054 × 10 power 23

= 0.01355175 × 10 power 23

= 1.355175 × 10 power 21

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