[Campbell Biology P.99] Which statement accurately describes the mole concept as presented ... | Practice Question
Which statement accurately describes the mole concept as presented in the text?
A: A mole of any substance always has the same mass.
B: A mole represents an exact number of objects (6.02 × 10^23), regardless of the substance's identity.
C: The molar mass of a substance is equivalent to its molecular mass measured in daltons.
D: Measuring substances in moles is primarily for aesthetic reasons in the laboratory.
Explanation
The text clearly defines a mole mol as representing an exact number of objects: 6.02 × 10^23, which is called Avogadro's number. This quantity is constant for any substance.