Question

How many moles are in 5.080*10^16 molecules of hydrogen?

Answer 1

how many molecules make up a mole of anything? It's kind of an important number in chemistry

Answer 2

One mole of every substance has Avogadro's number of particles i.e., 6.022 x 10^23
So by this reasoning
6.022x10^23 molecules of H2 are present in = 1 mole of H2
5.080x10^16 molecules of H2 are =(5.080x10^16)/(6.022x10^23)
=8.4357x10^-8 moles