Determining the Number of Neutrons in an Atom

Calculating the Mass of Molecules

Molecule MASS (or WEIGHT): The mass (or weight) of a molecule given in "atomic mass units."

The MASS (or WEIGHT) of a MOLECULE is given by the total mass (or weight) of all the ATOMS in that MOLECULE.

The following exercises check your ability to calculate the MOLECULAR MASS (or WEIGHT) of a given MOLECULE. (Works best on an HTML standard 4.0 or later.)