In this question, we need to calculate the percent mass concentration of one solute in one solvent, and we have:
178mg of C6H12O6
4.91g of H2O
To calculate the mass percent concentration, we can use the following formula:
%mass = (mass of solute/mass of solution)*100
But first, we need to have both compounds in the same unit, so 178mg will be equal to 0.178g
Now we add these values into the formula:
%mass = (0.178/5.088) * 100
mass = 3.50%
The 5.088 is because 4.91 + 0.178