Question

How many atoms are in 4.5x1023 formula units of KMnO4

Answer 1

4.5 x 10^23 formula units of KMnO4 contains 4.5 x 10^23 x (1 K + 1 Mn + 4 O) = 4.5 x 10^23 x 6 = 2.7 x 10^24 atoms.