How many atoms of aluminum are contained in a 36.0-ounce aluminum bat? (1 ounce = 28.35 grams)

Question

Quizplus · Accepted Answer

To find the number of aluminum atoms in a 36.0-ounce aluminum bat, we first convert the mass from ounces to grams (since 1 ounce = 28.35 grams), then use the molar mass of aluminum (about 26.98 g/mol) to find the number of moles of aluminum, and finally use Avogadro's number (6.022 × 10^23 atoms/mol) to find the number of atoms. The calculation is as follows:1. Mass in grams = 36.0 ounces × 28.35 grams/ounce = 1020.6 grams2. Moles of aluminum = 1020.6 grams / 26.98 grams/mol = 37.8 moles3. Number of atoms = 37.8 moles × 6.022 × 10^23 atoms/mol = 2.28 × 10^25 atomsTherefore, the correct answer is 2.28 × 10^25 atoms, which corresponds to choice A.

How Many Atoms of Aluminum Are Contained in a 36