Answer : The mass of magnesium are, 2.952 grams.
Explanation : Given,
Molar mass of Mg = 24 g/mole
First we have to calculate the moles of Mg.
As, [tex]6.022\times 10^{23}[/tex] atoms of Mg present in 1 mole of Mg atom
So, [tex]7.43\times 10^{22}[/tex] atoms of Mg present in [tex]\frac{7.43\times 10^{22}}{6.022\times 10^{23}}=0.123mole[/tex] mole of Mg atom
Now we have to calculate the mass of Mg.
[tex]\text{Mass of Mg}=\text{Moles of Mg}\times \text{Molar mass of Mg}=0.123mole\times 24g/mole=2.952g[/tex]
Therefore, the mass of magnesium are, 2.952 grams.
