Question

3.4 2 gm of glucose is dissolved in 400 gm of water. The concentration expressed in percentage by mass of the solution is....​

Answer 1

Answer:

7.87 %

Explanation:

Percentage by mass = Mass of component/Mass of solution × 100  {FORMULA}

Glucose  = 34.2 gm  

We know that,

Mass of solution

Mass of water  

Mass of glucose  

Mass of solution = mass of water + mass of Glucose  

= 400 + 34.2 gm = 434.2  

Therefore, the percentage of the mass = 34.2/434.2 × 100

= 3420/434.2  

= 7.87 % Mass of the glucose solution.