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Chlorophyll contains 4.8% Mg by mass. Ca...

Chlorophyll contains 4.8% Mg by mass. Calculate number of Mg atom in 2000 g chlorophyll (atomic weight Mg = 24) :-

A

`N_A`

B

`2N_A`

C

`4 N_A`

D

`6 N_A`

Text Solution

Verified by Experts

The correct Answer is:
C
100 g chlorophyll `to` 4.8 g Mg
2000 g Chlorophyll `to 4.8/100xx2000` = 96 g Mg
Number of Mg atoms = Moles x `N_A`
`="Mass"/"Molar mass" xx N_A`
`=96/24xxN_A`
`=4N_A`
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