Answer : The number of moles of argon in 364 g of argon is, 9.1 moles
Solution : Given,
Given mass of argon = 364 g
Molar mass of argon = 40 g/mole
Formula used for determining the number of moles :

Now put all the given values in this formula, we get the number of moles of argon.

Therefore, the number of moles of argon in 364 g of argon is, 9.1 moles