Question

a research scholar has only 300g of valuable solvent and wishes to make solution of 10% by weight from solute 'A' . How many grams of 'A' is weighed out ?​

Answer 1

Concept Introduction: Solutions are the basic concepts of Chemistry.

Given:

We have been Given: Mass of the solvent is

$300g$

To Find:

We have to Find: How many grams of 'A' is weighed out?

Solution:

According to the problem, Solute is

$10\%$

therefore,

$w\% = \frac{w}{w + 300} \times 100 \\ w = \frac{300}{9} = 33.33\%$

Final Answer: The percentage of grams weighed out is

$33.33\%$

#SPJ3

Answer 2

Answer:

33.33%

Explanation:

W%=w/w+W×100

10=w/w+300×100

w=300/9

w=33.33%