Calculate the number of atoms in 1 mole of Hydrogen Peroxide H2O2. [The Avogadro's constant is 6.0 x 10^23 mol-1 ]
Correct answer: D. 2.4 x 10^24
- A. 1.5 x 10^23
- B. 1.5 x 10^-23
- C. 0.5 x 10^23
- D. 2.4 x 10^24
Explanation
d) 2.4 x 10^24:This option is the correct answer. The Avogadro's constant is approximately 6.0 x 10^23 mol^-1, which means there are 6.0 x 10^23 entities (atoms or molecules) in 1 mole of a substance. Since hydrogen peroxide (H2O2) has two hydrogen atoms and two oxygen atoms, the number of atoms in 1 mole of hydrogen peroxide is twice the Avogadro's constant, which is 2.4 x 10^24. Explanation:
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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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