Question

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A compound contains 40% of carbon by weight. Molecular weight of the compound is 90.
The number of carbon atoms present in one molecule of the compound is
2) 2
4) 5
3. Haemoglobin contains 0.33% iron by weight. If one molecule of haemoglobin contains
1) 3
2,2
3,1
4,5​

Answer 1

Answer:

ANSWER

%C=Molecular weight of compoundWeight of carbon×100

∴40=90w×100

∴w=36 g

Mass of 1 atom of C=12gm 

Number of C atoms =1236=3

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