Question

A solution is prepared by adding 2 g of a substances A to 18 g of water
Calculate the mass percentage of the solute.
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Answer 1

Answer:

Mass percent of solute =  

mass of solution

mass of solute

​  

×100

Mass of solute = 2 g

Mass of solvent = 18 g

Mass of solution = 20 g

∴  Mass percent of solute =  

20

2

​  

×100

=10%

Explanation:

Answer 2

Answer:

Mass percent of solute =  

mass of solution

mass of solute

​  

×100

Mass of solute = 2 g

Mass of solvent = 18 g

Mass of solution = 20 g

∴  Mass percent of solute =  

20

2

​  

×100

=10%

Hence, option B is correct.

Explanation: