Final answer:
The percent concentration of sugar in the solution is calculated using the percent by mass formula. With 35 g of sugar in a 350 g solution, the percent concentration of sugar is 10%.
Step-by-step explanation:
To calculate the percent concentration of sugar in a solution, you can use the formula for percent by mass which is:
(mass of solute ÷ mass of solution) x 100%
In this case, the mass of the solute (sugar) is 35 g, and the total mass of the solution is 350 g. Plugging these values into the formula gives:
(35 g ÷ 350 g) x 100% = 10%
Therefore, the percent concentration of sugar in the solution is 10%.