Answer:
16.8 g/L.
Explanation:
Given that,
Mass of sugar, m = 4.2 g
Volume of tea, V = 0.25 L
We need to find the concentration of sugar in Nora's tea.
Here, 4.2 g is the mass of solute and 0.25 L is volume of the solution.
We know that,
[tex]\text{Mass concentration}=\dfrac{\text{Mass of solute}}{\text{Volume of solution}}\\\\C=\dfrac{4.2\ g}{0.25\ L}\\\\C=16.8\ g/L[/tex]
So, the concentration of sugar is 16.8 g/L.