Answer: The mass in grams of sodium carbonate is 34.3 g
Explanation:
Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.
[tex]Molarity=\frac{n\times 1000}{V_s}[/tex]
where,
n = moles of solute
[tex]V_s[/tex] = volume of solution in ml
moles of [tex]Na_2CO_3[/tex] = [tex]\frac{\text {given mass}}{\text {Molar mass}}=\frac{xg}{106g/mol}[/tex]
Now put all the given values in the formula of molarity, we get
[tex]1.27=\frac{xg\times 1000}{106g/mol\times 255.0 ml}[/tex]
[tex]x=34.3g[/tex]
Therefore, the mass in grams of sodium carbonate is 34.3 g
