As the mass of a sample increases, the number of moles present in the sample (increases)

true. m (↑) ⇒ n (↑)

Explanation:

mass (m) ≡ moles (n) * moleculas weight (Mw)

In the previous expression, we appreciate that the mass is directly proportional to the moles; therefore, if the mass of the sample increases, its number of moles will also increase, since the molecular weight is always constant.

∴ m (↑) ⇒ n (↑)

increases