   Chapter 15, Problem 25QAP ### Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425

#### Solutions

Chapter
Section ### Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425
Textbook Problem
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# What mass of each solute is present in 285 g of a solution that contains 5.00% by mass NaCl and 7.50% by mass Na2CO3?

Interpretation Introduction

Interpretation:

The mass of each solute present in 285g of the solution that contains 5.00% by mass NaCl and 7.50% by mass Na2CO3 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.
Explanation

The total mass of the solution is 285g.

The mass percentage of NaCl in solution is 5.00%.

The mass percentage of Na2CO3 in the solution is 7.50%.

The formula for mass percentage is represented as,

mass%=MMt×100%    (1)

Where,

• M represents the mass of the compound present in the solution.
• Mt represents the total mass of solution.

Rearrange the above equation for the value of M.

M=Mt×mass%100%    (2)

Substitute the value of mass of solution and mass percentage of NaCl in the equation (2).

M=285g5

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