Question

How many moles of helium are 8.84×1024 atoms of He?

Answer 1

14.68 moles of He

Step-by-step explanation:

To do this, just remember Avogadro's Constant or Avogadro's number. This constant tells us how many units ( in this case atoms) there are in a mole of ANY type of substance.

Avogadro's constant is 6.022140857 × 10²³ units per mole.

Now that we know how many atoms there are in 1 mole, we can use this as our conversion factor.

8.84 x 10²⁴ atoms of He → moles of He

`8.84*10^(24) atoms of He*(1moleofHe)/(6.022140857*10^(23)atomsofHe)=14.68molesofHe`

So the answer would be:

14.68 moles of He