Answer : The number of atoms of argon are \(1.61\times 10^{25}\)
Explanation : Given,
Moles of argon = 26.8 moles
As we know that,
1 mole of substance always contains \(6.022\times 10^{23}\) number of atoms.
As, 1 mole of argon contains \(6.022\times 10^{23}\) number of atoms
So, 26.8 mole of argon contains \(26.8\times 6.022\times 10^{23}=1.61\times 10^{25}\) number of atoms.
Therefore, the number of atoms of argon are \(1.61\times 10^{25}\)
