Question

18 gram of sodium chloride is dissolved in 82 gram of water calculate the concentration of solution in term of mass by mass percentage​

Answer 1

Answer:

Explanation:

the formula being used is:

  Weight/weight%=Mass of solute/mass of solution * 100

As given;

Mass of solute=18 gram

Mass of solution=Mass of solute + mass of solvent

                           =18 +82

                            =100 gram

Putting values:

Weight/weight%=18/100 * 100

                           =18 %

So,weight/weight% of 18 gram NaCl dissolved in 82 grams of water is 18 %

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Answer 2

Answer:

no. of solute ( sodium chloride) =18. no. of solvent (water) =82. mass of solution = mass of solute +solvent. 18+82= 100. concentration of solution = solute. upon mass of solution multiple by 100. 18/100 ✖ 100 =18