# (a) Interpretation: The copper yield results are lowered by the value 0.5 mg. The percent relative error due to the source is to be determined when the weight of the copper sample is 25mg. Concept introduction: The following formula will be used for the calculation of the relative error- E r = E m − E t E t × 100 ............….. (1) Where, E r = relative error E m = measured value E t = true value ### Principles of Instrumental Analysis

7th Edition
Douglas A. Skoog + 2 others
Publisher: Cengage Learning
ISBN: 9781305577213 ### Principles of Instrumental Analysis

7th Edition
Douglas A. Skoog + 2 others
Publisher: Cengage Learning
ISBN: 9781305577213

#### Solutions

Chapter A1, Problem A1.3QAP
Interpretation Introduction

## (a)Interpretation:The copper yield results are lowered by the value 0.5 mg. The percent relative error due to the source is to be determined when the weight of the copper sample is 25mg.Concept introduction:The following formula will be used for the calculation of the relative error-Er=Em−EtEt×100 ............….. (1)Where,Er = relative errorEm = measured valueEt = true value

Interpretation Introduction

### (b)Interpretation:The copper yield results are lowered by the value 0.5 mg. The percent relative error due to the source is to be determined when the weight of the copper sample is 100mg.Concept introduction:The following formula will be used for the calculation of the relative error-Er=Em−EtEt×100 ............….. (1)Where,Er = relative errorEm = measured valueEt = true value

Interpretation Introduction

### (c)Interpretation:The copper yield results are lowered by the value 0.5 mg. The percent relative error due to the source is to be determined when the weight of the copper sample is 250mg.Concept introduction:The following formula will be used for the calculation of the relative error-Er=Em−EtEt×100 ............….. (1)Where,Er = relative errorEm = measured valueEt = true value

Interpretation Introduction

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