Question

if 67.8 moles of gas was measured out into a helium balloon how many molecules would be present within the balloon

Answer 1

`4.08x10^(25) molecules`

Step-by-step explanation:

Hello there!

In this case, since the understanding of the mole-molecules relationships is analyzed via the Avogadro's number:

`1mol=6.022x10^(23)molecules`

Next, we can solve the following setup by starting with the 67.8 moles of helium and obtaining the required molecules as follows:

`67.8mol*(6.022x10^(23)molecules)/(1mol)\\\\=4.08x10^(25) molecules`

Best regards!