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

Answer: 4.08 x 10^25 molecules

Step-by-step explanation:

1 mole of a substance contains 6.022×10^23 molecules/atoms of that substance.

therefore:

67.8 x (6.022x10^23) = 4.08x10^25 molecules of helium