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The most abundant elements by mass in the body of a healthy human adult are : Oxygen (61.4%); Carbon (22.9%), Hydrogen (10.0%); and Nitrogen (2.6%).The weight which a 75 kg person would gain if all 1H atoms are replaced by 2H atoms is :
- a)15 kg
- b)37.5 kg
- c)7.5 kg
- d)10 kg
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
The most abundant elements by mass in the body of a healthy human adul...
Mas s in the body of a healthy human adult has :-
Oxygen = 61.4%, Carbon = 22.9%,
Hydrogen = 10.0% and Nitrogen = 2.6%
Total weight of person = 75 kg
Mas dur to 1H is
1H atoms are replaced by 2H atoms.
So mass gain by person = 7.5 kg
Oxygen = 61.4%, Carbon = 22.9%,
Hydrogen = 10.0% and Nitrogen = 2.6%
Total weight of person = 75 kg
Mas dur to 1H is
1H atoms are replaced by 2H atoms.
So mass gain by person = 7.5 kg
Most Upvoted Answer
The most abundant elements by mass in the body of a healthy human adul...
The weight gain if all 1H atoms are replaced by 2H atoms:
To calculate the weight gain, we need to determine the mass of hydrogen in the body of a healthy human adult and then calculate the mass difference when all 1H atoms are replaced by 2H atoms.
Step 1: Calculate the mass of hydrogen in the body:
Given that hydrogen constitutes 10.0% of the body's mass, we can calculate the mass of hydrogen in a 75 kg person:
Mass of hydrogen = 10.0% of 75 kg = (10/100) * 75 kg = 7.5 kg
Step 2: Determine the mass difference when replacing 1H with 2H:
Since the atomic mass of 2H (deuterium) is twice that of 1H (protium), we can calculate the mass difference when all 1H atoms are replaced by 2H atoms:
Mass difference = mass of 2H - mass of 1H = (2 g/mol - 1 g/mol)
To determine the number of moles of hydrogen, we can use the molar mass of hydrogen, which is approximately 1 g/mol.
Number of moles of 1H = mass of 1H / molar mass of 1H = 7.5 kg / (1 g/mol) = 7500 mol
Therefore, the weight gain can be calculated as:
Weight gain = Mass difference * Number of moles of 1H = (2 g/mol - 1 g/mol) * 7500 mol = 7500 g = 7.5 kg
Therefore, the weight gain when all 1H atoms are replaced by 2H atoms is 7.5 kg.
Hence, the correct answer is option C, 7.5 kg.
To calculate the weight gain, we need to determine the mass of hydrogen in the body of a healthy human adult and then calculate the mass difference when all 1H atoms are replaced by 2H atoms.
Step 1: Calculate the mass of hydrogen in the body:
Given that hydrogen constitutes 10.0% of the body's mass, we can calculate the mass of hydrogen in a 75 kg person:
Mass of hydrogen = 10.0% of 75 kg = (10/100) * 75 kg = 7.5 kg
Step 2: Determine the mass difference when replacing 1H with 2H:
Since the atomic mass of 2H (deuterium) is twice that of 1H (protium), we can calculate the mass difference when all 1H atoms are replaced by 2H atoms:
Mass difference = mass of 2H - mass of 1H = (2 g/mol - 1 g/mol)
To determine the number of moles of hydrogen, we can use the molar mass of hydrogen, which is approximately 1 g/mol.
Number of moles of 1H = mass of 1H / molar mass of 1H = 7.5 kg / (1 g/mol) = 7500 mol
Therefore, the weight gain can be calculated as:
Weight gain = Mass difference * Number of moles of 1H = (2 g/mol - 1 g/mol) * 7500 mol = 7500 g = 7.5 kg
Therefore, the weight gain when all 1H atoms are replaced by 2H atoms is 7.5 kg.
Hence, the correct answer is option C, 7.5 kg.
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The most abundant elements by mass in the body of a healthy human adult are : Oxygen (61.4%); Carbon (22.9%), Hydrogen (10.0%); and Nitrogen (2.6%).The weight which a 75 kg person would gain if all 1H atoms are replaced by 2H atoms is :a)15 kgb)37.5 kgc)7.5 kgd)10 kgCorrect answer is option 'C'. Can you explain this answer?
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The most abundant elements by mass in the body of a healthy human adult are : Oxygen (61.4%); Carbon (22.9%), Hydrogen (10.0%); and Nitrogen (2.6%).The weight which a 75 kg person would gain if all 1H atoms are replaced by 2H atoms is :a)15 kgb)37.5 kgc)7.5 kgd)10 kgCorrect answer is option 'C'. 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 The most abundant elements by mass in the body of a healthy human adult are : Oxygen (61.4%); Carbon (22.9%), Hydrogen (10.0%); and Nitrogen (2.6%).The weight which a 75 kg person would gain if all 1H atoms are replaced by 2H atoms is :a)15 kgb)37.5 kgc)7.5 kgd)10 kgCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The most abundant elements by mass in the body of a healthy human adult are : Oxygen (61.4%); Carbon (22.9%), Hydrogen (10.0%); and Nitrogen (2.6%).The weight which a 75 kg person would gain if all 1H atoms are replaced by 2H atoms is :a)15 kgb)37.5 kgc)7.5 kgd)10 kgCorrect answer is option 'C'. Can you explain this answer?.
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