Class 11 Exam > Class 11 Questions > The molar mass ofAl2O3isa)112b)82c)102d)92Cor...
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The molar mass of Al2O3 is
- a)112
- b)82
- c)102
- d)92
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
The molar mass ofAl2O3isa)112b)82c)102d)92Correct answer is option 'C'...
Molar mass = 2(27) +3 (16) = 102g.
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The molar mass ofAl2O3isa)112b)82c)102d)92Correct answer is option 'C'...
The molecular mass of A single aluminium atom is 27 and that of two aluminium atom is 54. the molecular mass of a single oxygen atom is 16 and that of three oxygen atom is 48. so the totalmolecular mass of the molecules becomes 27*2+16*3=54+48=102
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The molar mass ofAl2O3isa)112b)82c)102d)92Correct answer is option 'C'...
The molar mass of a compound is the mass of one mole of that compound. In order to calculate the molar mass of Al2O3, we need to consider the atomic masses of its constituent elements.
The atomic mass of aluminum (Al) is approximately 26.98 g/mol, and the atomic mass of oxygen (O) is approximately 16.00 g/mol.
To calculate the molar mass of Al2O3, we can multiply the atomic mass of aluminum by 2 (since there are 2 aluminum atoms in the formula) and add it to the atomic mass of oxygen multiplied by 3 (since there are 3 oxygen atoms in the formula).
Calculation:
(2 * atomic mass of Al) + (3 * atomic mass of O)
= (2 * 26.98 g/mol) + (3 * 16.00 g/mol)
= 53.96 g/mol + 48.00 g/mol
= 101.96 g/mol
Therefore, the molar mass of Al2O3 is approximately 101.96 g/mol.
The correct answer is option 'C' (102).
Summary:
- The molar mass of a compound is the mass of one mole of that compound.
- The atomic mass of aluminum is approximately 26.98 g/mol, and the atomic mass of oxygen is approximately 16.00 g/mol.
- To calculate the molar mass of Al2O3, we multiply the atomic mass of aluminum by 2 (since there are 2 aluminum atoms in the formula) and add it to the atomic mass of oxygen multiplied by 3 (since there are 3 oxygen atoms in the formula).
- The molar mass of Al2O3 is approximately 101.96 g/mol.
The atomic mass of aluminum (Al) is approximately 26.98 g/mol, and the atomic mass of oxygen (O) is approximately 16.00 g/mol.
To calculate the molar mass of Al2O3, we can multiply the atomic mass of aluminum by 2 (since there are 2 aluminum atoms in the formula) and add it to the atomic mass of oxygen multiplied by 3 (since there are 3 oxygen atoms in the formula).
Calculation:
(2 * atomic mass of Al) + (3 * atomic mass of O)
= (2 * 26.98 g/mol) + (3 * 16.00 g/mol)
= 53.96 g/mol + 48.00 g/mol
= 101.96 g/mol
Therefore, the molar mass of Al2O3 is approximately 101.96 g/mol.
The correct answer is option 'C' (102).
Summary:
- The molar mass of a compound is the mass of one mole of that compound.
- The atomic mass of aluminum is approximately 26.98 g/mol, and the atomic mass of oxygen is approximately 16.00 g/mol.
- To calculate the molar mass of Al2O3, we multiply the atomic mass of aluminum by 2 (since there are 2 aluminum atoms in the formula) and add it to the atomic mass of oxygen multiplied by 3 (since there are 3 oxygen atoms in the formula).
- The molar mass of Al2O3 is approximately 101.96 g/mol.
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The molar mass ofAl2O3isa)112b)82c)102d)92Correct answer is option 'C'. Can you explain this answer?
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The molar mass ofAl2O3isa)112b)82c)102d)92Correct answer is option 'C'. Can you explain this answer? for Class 11 2025 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about The molar mass ofAl2O3isa)112b)82c)102d)92Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 11 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The molar mass ofAl2O3isa)112b)82c)102d)92Correct answer is option 'C'. Can you explain this answer?.
The molar mass ofAl2O3isa)112b)82c)102d)92Correct answer is option 'C'. Can you explain this answer? for Class 11 2025 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about The molar mass ofAl2O3isa)112b)82c)102d)92Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 11 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The molar mass ofAl2O3isa)112b)82c)102d)92Correct answer is option 'C'. Can you explain this answer?.
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