Avogadro's number is the number of particles present in:
Correct answer: E. 1 mole
- A. 1 dm3 of molecule
- B. Mass of one molecule
- C. 1 g of molecule
- D. 1 g atom
- E. 1 mole
Explanation
1 mole is a unit of measurement that is used to count the number of atoms, molecules, or ions in a substance. It is equal to the number of atoms in 12 grams of carbon-12, which is approximately 6.022 × 10^23.
This question appeared on the NUMS 2018 paper, which you can sit online with every answer explained.
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About Moles and Avogadro's Number
The mole connects the microscopic number of particles with measurable mass, using Avogadro's number, 6.022 × 10²³ particles per mole. Questions involve molar mass, conversion between mass, moles and particles, percentage composition, empirical and molecular formulas, and distinguishing atoms, molecules, ions and formula units.
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