First, calculate the mass of sodium in g with the help of molar mass and number of moles.
Number of moles = [tex]\frac{given mass in g}{molar mass}[/tex] (1)
Molar mass of sodium =[tex]23 .0 g/mol[/tex]
Substitute the given value of number of moles and molar mass of sodium in formula (1)
[tex]4.30 moles = \frac{given mass in g}{23.0 g/mol}[/tex] (1)
[tex]4.30 moles\times 23.0 g/mol = mass in g [/tex] (1)
mass of sodium in g = [tex]98.9 g[/tex]
Now, according to conversion factor, 1 g = 1000 mg
So, [tex]98.9 g[/tex] of sodium = [tex]98.9 \times 1000 mg[/tex]
= [tex]98900 mg[/tex] of sodium
Thus, mass of sodium in mg =[tex]9.89 \times 10^{4} mg[/tex]
