Number of particles in a crushed solid sample is given by (where, m = mass of particles in a sample, Vp = volume of one particle, ρ= density of particles) ?
Correct answer: A. m/ρ . Vp
- A. m/ρ . Vp
- B. m . ρ/Vp
- C. m . Vp/ρ
- D. Vp/m . ρ
Explanation
The mass of one particle is ρVp, so the number of particles is total mass divided by this particle mass: m/(ρVp). Option a represents this expression.
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