Quantitative Chemical Analysis
Quantitative Chemical Analysis
9th Edition
ISBN: 9781464135385
Author: Daniel C. Harris
Publisher: W. H. Freeman
Question
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Chapter 27, Problem 27.19P

(a)

Interpretation Introduction

Interpretation:

The mass percentage of calcium in given mineral has to be calculated.

Concept introduction:

The mass percentage of compound can be calculated by dividing the calculated mass of the substance to the total mass of the sample whole multiplied by 100.

The mass percent can be calculated with formula,

Masspercent(inpercentage)=Calculatedmass(ingrams)totalmass(ingrams)×100

Molarity can be defined as the moles of solute to the volume of the solution (in litres). The molarity of a solution can be given by the formula,

Molarity(M)=Molesofsolute(inmol)Volumeofsolution(inL)

(b)

Interpretation Introduction

Interpretation:

The reason for heating unknown and precipitant solution before added together has to be explained.

(c)

Interpretation Introduction

Interpretation:

The benefits of cleaning precipitate with ammonium oxalate has to be explained.

(d)

Interpretation Introduction

Interpretation:

The filtrate testing benefits with silver nitrate has to be explained.

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