How many grams of NaCl are required to prepare 60mL of a 19% solution

There is 11.40 grams of NaCl are required to prepare the solution

Step-by-step explanation:

* Lets explain how to solve the problem

- We want to prepare 60 mL of 19% solution of NaCl

- The concentration of NaCl is 19%

- The volume of solution is 60 mL

- We need to find the mass of NaCl

- We must to understand the meaning of concentration %

- Concentration % means x grams of solute in 100 mL of solution

- So, 19% of NaCl means 19 grams of NaCl in 100 mL of solution.

∵ In 100 mL of solution, we need 19 grams of NaCl

∴ Find how many gram in 60 mL by using cross multiplication

∵ 19 grams ⇒ 100 mL

x grams ⇒ 60 mL

- By using cross multiplication

∴ x * 100 = 19 * 60

∴ 100 x = 1140

- Divide both sides by 100

∴ x = 11.40

∵ x represents the NaCl grams in the solution

∴ There is 11.40 grams of NaCl are required to prepare the solution