Question

How many moles of hydrogen atoms are present in 1 mole of ${\text{H}}_2\text{O}$?

• A. 2
• B. 1
• C. 4
• D. 3

Answer 1

Answer: (A)

2

For every mole of ${\text{H}}_2\text{O}$ molecules, there are two moles of H atoms.