(a)
Interpretation:
The mass percentage of NaCl in the given solution is to be calculated.
Concept Introduction:
The mass percentage of a compound present in a solution is calculated by dividing the mass of the compound present in the solution by the total mass of the solution and then multiplying it by 100. The formula for mass percentage is represented as:
mass %=MMt×100 %
Where,
- M represents the mass of the compound present in the solution.
- Mt represents the total mass of solution.
(b)
Interpretation:
The mass of CaCl2 present in the given solution is to be calculated.
Concept Introduction:
The mass percentage of a compound present in a solution is calculated by dividing the mass of the compound present in the solution by the total mass of the solution and then multiplying it by 100. The formula for mass percentage is represented as:
mass %=MMt×100 %
Where,
- M represents the mass of the compound present in the solution.
- Mt represents the total mass of solution.
(c)
Interpretation:
The mass of NaCl required to prepare given solution is to be calculated.
Concept Introduction:
The mass percentage of a compound present in a solution is calculated by dividing the mass of the compound present in the solution by the total mass of the solution and then multiplying it by 100. The formula for mass percentage is represented as:
mass %=MMt×100 %
Where,
- M represents the mass of the compound present in the solution.
- Mt represents the total mass of solution.

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Chapter 15 Solutions
EBK INTRO.CHEMISTRY (NASTA EDITION)
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