Molecular+Weight

**Date** **Block** **Molecular Weights**
 * Name**


 * 1) How many atoms of each element make up the following molecules:
 * 2) water - H2O __2 hydrogen + 1 oxygen__
 * 3) carbon monoxide - CO
 * 4) rust - Fe2 O3
 * 5) sugar – C6H12O6


 * 1) To determine the molecular weight of a molecule you must determine the number of atoms of each element (as above) and multiply this number by the atomic mass of that element then add the two masses together

example: water - H2O = 2 hydrogen atoms + 1 oxygen atom = 2x (1.01 g) + 1 x (16.00 g) = 2.02 g + 16.00 g H2O = 18.02 g
 * 1) use the space below to determine the molecular weights of:

Salt - NaCl

Carbon monoxide - CO

Rust - Fe2O3

Sulfuric Acid – H2SO4

Sugar – C6H12O6