Estimation of amounts of different components in a sample is________________?
Correct answer: A. Quantitative analysis
- A. Quantitative analysis
- B. Qualitative analysis
- C. Stochiometery
- D. Physical chemistry
Explanation
Quantitative analysis determines the amount or concentration of each component in a sample, using measurements and calculations. The likely mistake is choosing qualitative analysis, which identifies what substances are present but does not measure their amounts.
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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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