What is the weight/volume percent concentration of the solute given 38.0 g of NaNO3 in 480. mL of solution? Be sure your answer has the correct number of significant figures.

Answer 1

The weight/volume percent concentration is calculated using the formula:

% w/v = (mass of solute / volume of solution) x 100

First, convert the volume of the solution from mL to L:

480. mL = 0.480 L

Now plug in the values:

% w/v = (38.0 g / 0.480 L) x 100
% w/v = 79.2%

Therefore, the weight/volume percent concentration of the NaNO3 solution is 79.2%.