How many atoms are contained in one mole of Ca(OH)2?
Correct answer: A. 5 x 6.02 x 10^23 atoms
- A. 5 x 6.02 x 10^23 atoms
- B. 30 x 6.02 x 10^23
- C. 3x x 6.02 x 10^23
- D. 6 x 6.02 x 10^23
Explanation
The number of atoms in one mole of substance can be calculated byNo. Of atoms = atomicity X Avogadro's no.As a molecule of Ca(OH)2 contains 5 atoms (1Ca, 2O, and 2H), its atomicity is 5.So number of atoms in one mole of Ca(OH)2 will be 5 x 6.022 x 1023 atoms.
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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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