Question Detail

CHM 101 CHM 101 Past Questions Objective Question

Question

Calculate the number of hydrogen atoms in 1.00 mol of water (H₂O).
Options
A 6.022 × 10²³
B 1.204 × 10²⁴
Correct Answer
C 3.011 × 10²³
D 1.806 × 10²⁴
Correct Answer

Option B is the correct answer.

Detailed Explanation

1 mol H₂O contains 2 mol H atoms. Number of H atoms = 2 × 6.022 × 10²³ = 1.2044 × 10²⁴.

Hint

Multiply the number of moles of the compound by the number of atoms of that element per formula unit, then by Avogadro's number.

Question Info