Question

If 25.8 grams of BaO dissolve in enough water to make a 212 gram solution, what is the percent by mass of the solution?

•10.8%
•8.92%
•8.22%
•12.2%

Answer 1

mass of solute = 25.8 g

mass solution = 212 g

% =( mass of solute / mass solution ) x 100

% = ( 25.8 / 212 ) x 100

% = 0.122 x 100

= 12.2 %

Answer 2

12.2%

Step-by-step explanation:

Given:

Mass of BaO = 25.8 g

Mass of solution = 212 g

Step-by-step explanation:

Here the solution is made of BaO solute dissolved in water solvent.

Percent mass is essentially the ratio of the mass of the solute by the mass of the solution times 100

`% Mass = (Mass\ solute)/(Mass\solution) *100`

`% BaO = (25.8)/(212) *100= 12.2%`