2022 Easy
Single Choice
Marks: 4.00 / −1.00
The molar mass of \( \text{H}_2\text{O} \) is approximately:
- A. \( 18\,\text{g/mol} \)
- B. \( 16\,\text{g/mol} \)
- C. \( 20\,\text{g/mol} \)
- D. \( 2\,\text{g/mol} \)
Correct Option:
- A. \( 18\,\text{g/mol} \) ✓ Correct
- B. \( 16\,\text{g/mol} \)
- C. \( 20\,\text{g/mol} \)
- D. \( 2\,\text{g/mol} \)
Hint: H = 1, O = 16.
Solution:
\( M(\text{H}_2\text{O}) = 2(1) + 16 = 18\,\text{g/mol} \)
mole-concept
molar-mass