Answer : The mass of argon will be, 250 grams
Explanation : Given,
Number of atoms of argon = [tex]3.8\times 10^{24}[/tex]
As we know that, 1 mole of substance contains [tex]6.022\times 10^{23}[/tex] number of atoms.
First we have to calculate the moles of argon.
As, [tex]6.022\times 10^{23}[/tex] number of argon atoms present in 1 mole of argon
So, [tex]3.8\times 10^{24}[/tex] number of argon atoms present in [tex]\frac{3.8\times 10^{24}}{6.022\times 10^{23}}=6.31[/tex] mole of argon
The moles of argon = 6.31 mole
Now we have to calculate the mass of argon.
[tex]\text{Mass of }Ar=\text{Moles of }Ar\times \text{Molar mass of }Ar[/tex]
[tex]\text{Mass of }Ar=(6.31mole)\times (40g/mole)=252.4g[/tex]
The mass of argon = 252.4 grams that is approximately equal to 250 grams.
Therefore, the mass of argon will be, 250 grams.
