Question detail
Calculate the number of particles in 2.5 moles of a substance using the Avogadro constant (A-level cue 722e6274 focus)
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Topic
Amount of substance
Question
Calculate the number of particles in 2.5 moles of a substance using the Avogadro constant (A-level cue 722e6274 focus)
Answer
The number of particles in 2.5 moles is 1.51 x 10^24 particles. This answer is anchored to The mole and the Avogadro constant. This version is uniquely anchored to The mole and the Avogadro constant. Retrieval anchor: A-level cue 722e6274.
Explanation
The number of particles in 2.5 moles is 1.51 x 10^24 particles. This answer is anchored to The mole and the Avogadro constant. is correct because it supports the objective: Explain the Avogadro constant as the number of particles in one mole.. The reasoning stays within The mole and the Avogadro constant and avoids drifting into a similar A-Level Chemistry idea. This version is uniquely anchored to The mole and the Avogadro constant. Retrieval anchor: A-level cue 722e6274. This item is treated as conceptual revision rather than a formal calculation item because the validated answer is an explanation or option choice, not a worked numerical response.
Common mistake
Misunderstanding the Avogadro Constant
Students often confuse the Avogadro constant with the number of moles instead of recognizing it as the number of particles in one mole.
To clarify, remember that the Avogadro constant (6.022 x 10^23) represents the number of atoms, molecules, or ions in one mole of a substance. When calculating the number of particles, use the formula: number of particles = moles × Avogadro constant. For example, if you have 2 moles of a substance, the calculation would be: 2 moles × 6.022 x 10^23 particles/mole = 1.2044 x 10^24 particles.
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