The number of particles (atoms, molecules, tons) in one mole of any substance is numerically equal to
Correct answer: C. 6.023x10 ^23
- A. 6.023x10^22
- B. 6.023x10^21
- C. 6.023x10 ^23
- D. 4.02x10^23
Explanation
One mole of any substance contains 6.023 x 10^23 particles (atoms, molecules, or ions). This number is known as the Avogadro's number (NA).Avogadro's number is a fundamental constant in chemistry, and it is used to relate the amount of a substance to the number of particles it contains.
This question appeared on the KMU MDCAT 2023 (retake) paper, which you can sit online with every answer explained.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
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.
Practise Fundamental Concepts of Chemistry
894 free Fundamental Concepts of Chemistry MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.