Question

How many moles are comprised by a billion helium atoms?

Answer 1

since 1 mole is equal to \(6.022*10^{23}\), to get the amount equivalent moles you would divide the atoms by avogadros number. To summarize that with an equation:

\(n=\dfrac{N}{N_A}\) ; N= atoms, \(N_A\)= avogadros number, n=moles

Answer 2

So N = a billion. Na = 6.022*10^23.
The answer would be 1.66*10^-15?

Answer 3

yep

Answer 4

Awesome, thank you :)

Answer 5

no problem !