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Given that the abundances of isotopes 54Fe, 56Fe and 57 Fe are 5%, 90% and 5%, respectively, the atomic mass of Fe is
- a)55.85
- b)55.95 (2009S)
- c)55.75
- d)56.05
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
Given that the abundances of isotopes 54Fe, 56Fe and 57 Fe are 5%, 90%...
Multiply the mass of each isotope with its relative percentage and then add them all. Finally divide by 100 to get the relative mass.
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Given that the abundances of isotopes 54Fe, 56Fe and 57 Fe are 5%, 90%...
Given Information:
- Abundances of isotopes:
- 54Fe: 5%
- 56Fe: 90%
- 57Fe: 5%
To find:
The atomic mass of Fe
Solution:
The atomic mass of an element is the weighted average of the masses of its isotopes, taking into account their relative abundances.
Step 1: Find the atomic masses of each isotope
- The atomic mass of 54Fe is 54 amu (atomic mass units).
- The atomic mass of 56Fe is 56 amu.
- The atomic mass of 57Fe is 57 amu.
Step 2: Calculate the weighted average atomic mass
- Multiply the atomic masses of each isotope by their respective abundances:
- (54Fe mass * 0.05) + (56Fe mass * 0.90) + (57Fe mass * 0.05)
- (54 * 0.05) + (56 * 0.90) + (57 * 0.05)
- 2.7 + 50.4 + 2.85
- 55.95 amu
Answer:
Therefore, the atomic mass of Fe is 55.95 amu. Hence, the correct answer is option 'B'.
- Abundances of isotopes:
- 54Fe: 5%
- 56Fe: 90%
- 57Fe: 5%
To find:
The atomic mass of Fe
Solution:
The atomic mass of an element is the weighted average of the masses of its isotopes, taking into account their relative abundances.
Step 1: Find the atomic masses of each isotope
- The atomic mass of 54Fe is 54 amu (atomic mass units).
- The atomic mass of 56Fe is 56 amu.
- The atomic mass of 57Fe is 57 amu.
Step 2: Calculate the weighted average atomic mass
- Multiply the atomic masses of each isotope by their respective abundances:
- (54Fe mass * 0.05) + (56Fe mass * 0.90) + (57Fe mass * 0.05)
- (54 * 0.05) + (56 * 0.90) + (57 * 0.05)
- 2.7 + 50.4 + 2.85
- 55.95 amu
Answer:
Therefore, the atomic mass of Fe is 55.95 amu. Hence, the correct answer is option 'B'.
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Given that the abundances of isotopes 54Fe, 56Fe and 57 Fe are 5%, 90% and 5%, respectively, the atomic mass of Fe isa)55.85b)55.95 (2009S)c)55.75d)56.05Correct answer is option 'B'. Can you explain this answer?
Question Description
Given that the abundances of isotopes 54Fe, 56Fe and 57 Fe are 5%, 90% and 5%, respectively, the atomic mass of Fe isa)55.85b)55.95 (2009S)c)55.75d)56.05Correct answer is option 'B'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Given that the abundances of isotopes 54Fe, 56Fe and 57 Fe are 5%, 90% and 5%, respectively, the atomic mass of Fe isa)55.85b)55.95 (2009S)c)55.75d)56.05Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Given that the abundances of isotopes 54Fe, 56Fe and 57 Fe are 5%, 90% and 5%, respectively, the atomic mass of Fe isa)55.85b)55.95 (2009S)c)55.75d)56.05Correct answer is option 'B'. Can you explain this answer?.
Given that the abundances of isotopes 54Fe, 56Fe and 57 Fe are 5%, 90% and 5%, respectively, the atomic mass of Fe isa)55.85b)55.95 (2009S)c)55.75d)56.05Correct answer is option 'B'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Given that the abundances of isotopes 54Fe, 56Fe and 57 Fe are 5%, 90% and 5%, respectively, the atomic mass of Fe isa)55.85b)55.95 (2009S)c)55.75d)56.05Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Given that the abundances of isotopes 54Fe, 56Fe and 57 Fe are 5%, 90% and 5%, respectively, the atomic mass of Fe isa)55.85b)55.95 (2009S)c)55.75d)56.05Correct answer is option 'B'. Can you explain this answer?.
Solutions for Given that the abundances of isotopes 54Fe, 56Fe and 57 Fe are 5%, 90% and 5%, respectively, the atomic mass of Fe isa)55.85b)55.95 (2009S)c)55.75d)56.05Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for JEE.
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