Haemoglobin contains 0.33% of Iron by weight. The molecular weight of it is approx. 67200. The no. of iron atoms present in one molecule of Haemoglobin are ________?

Options :

(1) 1 (2) 2 (3) 4 (4) 6

Question

Haemoglobin contains 0.33% of Iron by weight. The molecular weight of it is approx. 67200. The no. of iron atoms present in one molecule of Haemoglobin are ________? Options : (1) 1 (2) 2 (3) 4 (4) 6

Vikas TU · Answer

Ist method:

a BE THE NO. OF ATOMS PRESENT IN ONE MOLECULE:

(a/67200) x 100 = 0.33 %

a = 3.9 = 4 (approx)

2nd method (direct method)

1) 100 - 0.33 grams of haemoglobin is present then,

moles of haemoglobin = 99.67/67200 = 0.00148

2) Moles of iron present in haemo. = 0.33/56 = 0.00589

Now, a/67200 moles of Haemoglobin contains 0.00589 moles
then no. of moles of iron present in one molecule of haemo. = 0.00589 x Na/0.00148 x Na = 3.9 = 4

Approve plz!

Amruth Sai · Answer

(3)4

Abhishek kumar singh · Answer

Weight of fe in heamoglobin = (0.33 ×67200) ÷100=672÷3=224Moles of fe = wt. In gm÷molar mass=224÷56=4

Anurag Singh · Answer

Anurag singh Hello friends , The hemoglobin molecular mass=67200. 0.33%of iron = given mass ×100/molar mass 0.33% of iron =given mass×100/67200 Given mass =221 Iron mass =221/56 Iron atoms =4 Thank u

ankit singh · Answer

The number of iron atoms (At. Wt . of Fe =56) present in one molecule of haemoglobin is. Gram atom of Fe=672× 0.33 56=4.

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Haemoglobin contains 0.33% of Iron by weight. The molecular weight of it is approx. 67200. The no. of iron atoms present in one molecule of Haemoglobin are ________? Options : (1) 1 (2) 2 (3) 4 (4) 6

Haemoglobin contains 0.33% of Iron by weight. The molecular weight of it is approx. 67200. The no. of iron atoms present in one molecule of Haemoglobin are ________?

Options :

(1) 1 (2) 2 (3) 4 (4) 6

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