Final answer:
To determine the number of moles of aluminum in a sample, compare the sample's mass to the molar mass of aluminum, which is 26.98g. The sample will contain one mole if it weighs exactly 26.98g.
Step-by-step explanation:
The question pertains to determining if an aluminum sample from a can contains more than, less than, or exactly one mole of aluminum. To support an answer with calculations, one would need to know the mass of the aluminum can sample. Using the given reference information, which states that 1 mole of aluminum (Al) has a mass of 26.98g, the mass of the aluminum sample from the can can be compared to this number. If the sample is exactly 26.98g, then it contains exactly one mole of aluminum. If it weighs more than 26.98g, it contains more than one mole, and if it weighs less, it contains less than one mole.