How many atoms are contained in a sample of krypton, Kr, that weighs 8.38 g?
A)one Avogadro's number
B)one-tenth Avogadro's number
C)one
D)one-tenth

Question

Quizplus · Accepted Answer

The atomic mass of krypton (Kr) is approximately 83.8 g/mol, meaning 83.8 g of Kr contains Avogadro's number of atoms (approximately $6.022 \times 10^{23}$ atoms). Therefore, 8.38 g of Kr, which is one-tenth of 83.8 g, contains one-tenth of Avogadro's number of atoms.

How Many Atoms Are Contained in a Sample of Krypton