All Courses
Explore Courses UPSC Exam UPSC Test Series Free Notes EduRev Infinity Get the App Login Join for Free
Sign in Open App
Class 11 Exam  >  Class 11 Questions  >  Haemoglobin contains 0.334% of iron by weight... Start Learning for Free
SaveJoin the Discussion on the App
Haemoglobin contains 0.334% of iron by weight.The molecular weight of haemoglobin is approximately 67200. The number of iron atoms (at. wt. of Fe is 56) present in one molecule of haemoglobin are [1998]
  • a)
    1
  • b)
    6
  • c)
    4
  • d)
    2
Correct answer is option 'C'. Can you explain this answer?
FREE This question is part of
Download PDF Attempt Test
Download PDF Attempt this Test
Verified Answer
Haemoglobin contains 0.334% of iron by weight.The molecular weight of ...
Given : Percentage of the iron = 0.334%; Molecular weight of the haemoglobin = 67200 and atomic weight of the iron = 56. We know that the number of iron atoms
View all questions of this test
Most Upvoted Answer
Haemoglobin contains 0.334% of iron by weight.The molecular weight of ...
Given:
Percentage of iron in haemoglobin by weight = 0.334%
Molecular weight of haemoglobin = 67200
Atomic weight of iron (Fe) = 56

To find: Number of iron atoms present in one molecule of haemoglobin

Solution:
1. Calculate the mass of iron present in one molecule of haemoglobin:
Mass of iron = 0.334% of 67200
= (0.334/100) x 67200
= 224.448 g

2. Calculate the number of moles of iron:
Number of moles = Mass/Molar mass
Molar mass of iron = 56 g/mol
Number of moles of iron = 224.448/56
= 4.001

3. Since there are 4 atoms of iron in 1 mole of iron, the number of iron atoms present in one molecule of haemoglobin is:
4 x 4.001 = 16.004

Rounding off to the nearest whole number, we get: 16 ≈ 4

Therefore, the number of iron atoms present in one molecule of haemoglobin is 4.

Answer: Option (c) 4.
Attention Class 11 Students!
To make sure you are not studying endlessly, EduRev has designed Class 11 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 11.
< Previous Question Next Question >
Explore Courses for Class 11 exam

Similar Class 11 Doubts

Two containers X Y are present with container X consisting of some mass of He at some temperature while container Y having double the volume as that of container X kept at same temperature containing same mass of H2 gas as the mass of Helium gas. Based on this data the following conditions answer the question that followsAssume sizes of H2 molecule He atom to be same size of Hatom to be half to that of Heatom only bimolecular collisions to be occuring.Condition I: all except one atom of He are stationary in cont. X all molecules of H2 are moving in container Y.Condition II: both containers contain all moving moleculesQ. Assuming condition II to be applicable, if temperature only of container Y is doubled to that of original (causing dissociation of all H2 gas into H gaseous atoms) then, if no. of total collisions per unit volume per unit time in container X is A then, no. of total collisions made by all molecules per unit volume in container Y would be

Two containers X Y are present with container X consisting of some mass of He at some temperature while container Y having double the volume as that of container X kept at same temperature containing same mass of H2 gas as the mass of Helium gas. Based on this data the following conditions answer the question that followsAssume sizes of H2 molecule He atom to be same size of Hatom to be half to that of Heatom only bimolecular collisions to be occuring.Condition I: all except one atom of He are stationary in cont. X all molecules of H2 are moving in container Y.Condition II: both containers contain all moving moleculesQ. Assuming condition I to be applicable if no. of total collisions occuring per unit time is A in container X then no. of total collisions made by any one molecule in container Y will be

Attempt All sub parts from each question.Molecular Perspective In water, there are two types of molecules. Some molecules are at the surface, called exterior molecules, and some molecules are inside, called interior molecules. The interior molecules are attracted to all the molecules around them. The exterior molecules are attracted to only the other surface molecules and to those below the surface. So that the energy state of the molecules on the interior is much lower than that of the molecules on the exterior. The molecules always try to maintain a lower energy state and hence the exterior molecules experience a downward force. This force is known as cohesive force. As a result they try to maintain a minimum surface area, thus allowing more molecules to have a lower energy state. Thus surface tension is created. The water molecules attract one another due to the water molecule’s polar property. The hydrogen ends, which are positive in comparison to the negative ends of the oxygen, cause water to "stick " together. This is why there is surface tension. Water has very high surface tension. It is 72.8 milli newton per meter at 20°C.Q. Which one of the following is the correct molecular structure of water molecule?

Top Courses for Class 11View all

Top Courses for Class 11

Haemoglobin contains 0.334% of iron by weight.The molecular weight of haemoglobin is approximately 67200. The number of iron atoms (at. wt. of Fe is 56) present in one molecule of haemoglobin are [1998]a)1b)6c)4d)2Correct answer is option 'C'. Can you explain this answer?
Question Description
Haemoglobin contains 0.334% of iron by weight.The molecular weight of haemoglobin is approximately 67200. The number of iron atoms (at. wt. of Fe is 56) present in one molecule of haemoglobin are [1998]a)1b)6c)4d)2Correct answer is option 'C'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Haemoglobin contains 0.334% of iron by weight.The molecular weight of haemoglobin is approximately 67200. The number of iron atoms (at. wt. of Fe is 56) present in one molecule of haemoglobin are [1998]a)1b)6c)4d)2Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Haemoglobin contains 0.334% of iron by weight.The molecular weight of haemoglobin is approximately 67200. The number of iron atoms (at. wt. of Fe is 56) present in one molecule of haemoglobin are [1998]a)1b)6c)4d)2Correct answer is option 'C'. Can you explain this answer?.
Solutions for Haemoglobin contains 0.334% of iron by weight.The molecular weight of haemoglobin is approximately 67200. The number of iron atoms (at. wt. of Fe is 56) present in one molecule of haemoglobin are [1998]a)1b)6c)4d)2Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 11. Download more important topics, notes, lectures and mock test series for Class 11 Exam by signing up for free.
Here you can find the meaning of Haemoglobin contains 0.334% of iron by weight.The molecular weight of haemoglobin is approximately 67200. The number of iron atoms (at. wt. of Fe is 56) present in one molecule of haemoglobin are [1998]a)1b)6c)4d)2Correct answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Haemoglobin contains 0.334% of iron by weight.The molecular weight of haemoglobin is approximately 67200. The number of iron atoms (at. wt. of Fe is 56) present in one molecule of haemoglobin are [1998]a)1b)6c)4d)2Correct answer is option 'C'. Can you explain this answer?, a detailed solution for Haemoglobin contains 0.334% of iron by weight.The molecular weight of haemoglobin is approximately 67200. The number of iron atoms (at. wt. of Fe is 56) present in one molecule of haemoglobin are [1998]a)1b)6c)4d)2Correct answer is option 'C'. Can you explain this answer? has been provided alongside types of Haemoglobin contains 0.334% of iron by weight.The molecular weight of haemoglobin is approximately 67200. The number of iron atoms (at. wt. of Fe is 56) present in one molecule of haemoglobin are [1998]a)1b)6c)4d)2Correct answer is option 'C'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Haemoglobin contains 0.334% of iron by weight.The molecular weight of haemoglobin is approximately 67200. The number of iron atoms (at. wt. of Fe is 56) present in one molecule of haemoglobin are [1998]a)1b)6c)4d)2Correct answer is option 'C'. Can you explain this answer? tests, examples and also practice Class 11 tests.
Explore Courses for Class 11 exam

Top Courses for Class 11

Explore Courses

Suggested Free Tests

Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev
Get App
© EduRev
Education Revolution
Signup to see your scores go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup