Answer : The mass of 0.50 moles of Na is, 11 grams
Explanation : Given,
Moles of Na = 0.50 mole
Molar mass of Na = 22.99 g/mole
Formula used :
[tex]n=\frac{w}{M}[/tex]
where,
n = number of moles of Na
w = mass of Na
M = molar mass of Na
Now put all the given values in this formula, we get the mass of Na.
[tex]0.50mole=\frac{w}{22.99g/mole}[/tex]
[tex]w=11.4g\approx 11g[/tex]
Therefore, the mass of 0.50 moles of Na is, 11 grams
