Difficult
Chlorophyll, the green pigment in plants responsible for photosynthesis, contains $2.68\%$ of magnesium by mass. Calculate the number of magnesium atoms in $2.00 \ g$ of chlorophyll.
- A$1.275 \times 10^{21}$
- B$2.897 \times 10^{24}$
- C$1.075 \times 10^{23}$
- D$1.345 \times 10^{21}$
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