Question

How many moles of Sodium, Na, are in 1.55 x 10²⁴ Na atoms?

1.55 x 10²⁴ Na atoms =                 mol

Answer 1

- a mole is equal to the 6.023 x 1023 no. of atoms. So By Unitary method, one can find no. of moles that 1.558 10 atoms contain, - 1 mol amole 6.023x10² 1.558 1024 24 - 1.5 mole x mole = anaa oo aaa 1 x 1.558 102" 6.023 X 10²3 Please note no. of atoms given in the form 1.558 1024 is taken as 1.55×10²4 because logically that gives desirable mole.