Answer: The mass of one mole of a substance is equal to its molar mass in grams. The molar mass of a substance is the mass of one mole of that substance and is usually expressed in atomic mass units (amu) or grams per mole (g/mol).
One mole of a substance contains Avogadro's number of particles, which is approximately 6.022 x 10^23.
Since the mass of one doughnut is given in grams (74 g), we can assume that this is the molar mass of the substance in question. So, the mass in grams of one mole of the substance is:
Mass of one mole = 74 g
So, the answer to two significant figures is:
Mass of one mole = 74 g (rounded to two significant figures).
Explanation: