Mole Concept
A sample contains 3.011×10⁺23 atoms of an element. Its mass is 12 g. The element is:
Select the correct option:
Solution
Magnesium
- Find Number of Moles:
- n=NANumber of atoms=6.022×10233.011×1023=0.5 mol.
- Calculate Molar Mass:
- Molar mass=MolesMass=0.5 mol12 g=24 g/mol.
- Identify the Element:
- Magnesium (Mg) has a molar mass of 24 g/mol.
- (Carbon is 12, Aluminium is 27, Oxygen is 16).
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About This Question
- Subject
- chemistry
- Chapter
- some basic concepts in chemistry
- Topic
- mole concept
- Difficulty
- Medium
- Year
- 2025
This medium difficulty chemistry question is from the chapter some basic concepts in chemistry, covering the topic of mole concept. It appeared in the 2025 exam. Practice this and similar questions to strengthen your understanding of some basic concepts in chemistry concepts.
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