To find the number of atoms in 2.5 moles of manganese (Mn), we can use Avogadro's number, which states that one mole contains 6.022 x 10^23 atoms.
Multiply 2.5 moles by Avogadro's number:
2.5 moles x 6.022 x 10^23 atoms/mole = 1.5055 x 10^24 atoms
Rounding to the tenths place, we get:
1.51 x 10^24 atoms
So, there are approximately 1.51 x 10^24 atoms in 2.5 moles of manganese (Mn).
