The mass of one mole of electron is ?
Correct answer: C. 0.55mg
- A. 1.8mg
- B. 0.184mg
- C. 0.55mg
- D. 0.64mg
Explanation
We know that:Mass of an electron = 9.1 ×10-³¹Avogadro's constant = 6.02 ×10²³Mass of one mole Electron: = 9.1 × 10-³¹ × 6.02 × 10²³ = 5.48 × 10^-7 kgHence, = 5.48 × 10^-7 ×1000000 = 0.55 mg
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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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