A can of chicken broth contains 340 mg of sodium chloride in 286.7 g of broth. What is the percent by mass of sodium chloride in the broth?

0.12 & of NaCl

Explanation:

Determine the percentage of NaCl in the broth

First of all, we convert the mass from mg to g

340 mg. 1g / 1000 mg = 0.340 g

Now we can calculate the %

(0.340 g / 286.7 g). 100 = 0.12 %

The percent by mass of sodium chloride in the broth is 0.118 %

Explanation:

Step 1: Data given

Mass of sodium chloride = 340 mg = 0.340 grams

Mass of broth = 286.7 grams

Step 2: Calculate the total mass

Total mass = mass of sodium chloride + mass of broth

Total mass = 0.340 grams + 286.7 grams

Total mass = 287.04 grams

Step 3: Calculate percent by mass of sodium chloride

% mass NaCl = (mass NaCl / total mass) * 100%

% mass NaCl = (0.340 grams / 287.04 grams) * 100 %

% mass NaCl = 0.118 %

The percent by mass of sodium chloride in the broth is 0.118 %