Question

One mole of \(H_2\) gas contains how many molecules? 

• A. \(6.023 \times 10^{23}\)
• B. (2\times6.023 \times 10^{23}\)
• C. \(6.023 \times 10^{24}\)
• D. \(6.023 \times 10^{22}\)

Answer 1

The Correct Option is A

By definition, one mole of any substance contains Avogadro's number of particles, which is 6.022 × 10²³ particles (commonly approximated as 6.023 × 10²³). This applies to atoms, molecules, or ions depending on the nature of the substance.
So, 1 mole of H₂ gas contains exactly 6.023 × 10²³ molecules of hydrogen gas.

The correct answer is option (A): \(6.023 \times 10^{23}\)