Use Your Knowledge of English:
1. Analyze the Units of the Answer. How many dimensions?Most chemistry problems (stoichiometry) deal with questions asking for a only one dimensional unit. Sometimes a compound unit, two dimensions, is requested and this is usually a single unit in the numerator and a single unit in the denominator. Examples of single and compound dimensional unit answers are:
One Dimensional Units:

Two Dimensional Units:

* Volume is actually three dimensional (Length^{3}), but chemistry problems will be easier if we treat it as one. 