Question

1. What is the percent by mass concentration of a solution that contains 5.30 g of salt dissolved in 19.7 g of water?

Given:
Find:
Formula:
Solution:​

Answer 1

Answer:

What is the percent by mass concentration of a solution that contains 5.30 g of salt dissolved in 19.7 g of water? Given Solution: mass of solute =5.30g percent by mass mass of solvent =19.7g = massofsolute/massofsolute+massofsolvent * 100 = 1.30g/1.97g+100g * 100 = 1.99/25.6g * 100=21.2%

Answer 2

Answer:

The answer is 21.2%

Explanation:

$mass \: of \: solute = \frac{5.30g\%}{mass \: of \: solvent } \\ = 19.7g = \frac{mass \: of \: solute}{mass \: of \: solute + solvent\times 100} \\ = \frac{1.30g}{1.97g + 100g \times 100} = \frac{1.99}{25.6g} \times 100 = 21.2\%$