Question

Find the molecular mass of table sugar (sucrose) which has a molecular formula $C_{12}{H}_{22}{O}_{11}$.

• A. $340$
• B. $242.30$
• C. $342.30$
• D. None of the above

Answer 1

The correct option is C $342.30$

Molecular mass $C_{12}{H}_{22}{O}_{11}=12\left(massofC\right)+22\left(massofH\right)+11\left(massofO\right)$
Molecular mass $C_{12}{H}_{22}{O}_{11}=12\times \left(12.01\right)+22\times \left(1.008\right)+11\times \left(16.00\right)$
Molecular mass $C_{12}{H}_{22}{O}_{11}=342.30$