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Do the following calculations and use the correct number of significant figures in your answers. Assume all numbers are the results of measurements. In calculations involving both addition/subtraction and multiplication/division, it is usually better to do additions/subtractions first. a. ( 0.0267 + 0.0019 ) ( 4.626 ) 28.7794 b. 212.6 − 21.88 86.37 c. 27.99 − 18.07 4.63 − 0.88 d. 18.87 2.46 − 18.07 0.88 (HINT: Do divisions first, then subtract.) e. ( 8.46 − 2.09 ) ( 0.51 + 0.22 ) ( 3.74 + 0.07 ) ( 0.16 + 0.2 ) f. 12.06 − 11.84 0.271

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Chemistry for Today: General, Orga...

9th Edition
Spencer L. Seager + 2 others
Publisher: Cengage Learning
ISBN: 9781305960060

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BuyFindarrow_forward

Chemistry for Today: General, Orga...

9th Edition
Spencer L. Seager + 2 others
Publisher: Cengage Learning
ISBN: 9781305960060
Chapter 1, Problem 1.74E
Textbook Problem
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Do the following calculations and use the correct number of significant figures in your answers. Assume all numbers are the results of measurements. In calculations involving both addition/subtraction and multiplication/division, it is usually better to do additions/subtractions first.

a. ( 0.0267   +   0.0019 ) ( 4.626 ) 28.7794

b. 212.6     21.88 86.37

c. 27.99   18.07   4.63     0.88

d. 18.87 2.46     18.07 0.88

(HINT: Do divisions first, then subtract.)

e. ( 8.46     2.09 ) ( 0.51   +   0.22 ) ( 3.74   +   0.07 ) ( 0.16   +   0.2 )

f. 12.06     11.84 0.271

Interpretation Introduction

(a)

Interpretation:

The calculations are to be expressed by using correct number of significant figures.

Concept introduction:

Scientific notation is used to write large numbers by shifting the decimal point. It is expressed as the product of a decimal term and 10 raised to some power. Significant figures are used to express a measurement in scientific notation. The significant figures reflect the closeness of measured values to the standard values.

Explanation of Solution

The given problem is,

(0.0267+0.0019)(4.626)28.7794

The calculation is as follows:

(0.0267+0.0019)(4.626)28.7794=0.0286(4

Interpretation Introduction

(b)

Interpretation:

The calculations are to be expressed by using correct number of significant figures.

Concept introduction:

Scientific notation is used to write large numbers by shifting the decimal point. It is expressed as the product of a decimal term and 10 raised to some power. Significant figures are used to express a measurement in scientific notation. The significant figures reflect the closeness of measured values to the standard values.

Interpretation Introduction

(c)

Interpretation:

The calculations are to be expressed by using correct number of significant figures.

Concept introduction:

Scientific notation is used to write large numbers by shifting the decimal point. It is expressed as the product of a decimal term and 10 raised to some power. Significant figures are used to express a measurement in scientific notation. The significant figures reflect the closeness of measured values to the standard values.

Interpretation Introduction

(d)

Interpretation:

The calculations are to be expressed by using correct number of significant figures.

Concept introduction:

Scientific notation is used to write large numbers by shifting the decimal point. It is expressed as the product of a decimal term and 10 raised to some power. Significant figures are used to express a measurement in scientific notation. The significant figures reflect the closeness of measured values to the standard values.

Interpretation Introduction

(e)

Interpretation:

The calculations are to be expressed by using correct number of significant figures.

Concept introduction:

Scientific notation is used to write large numbers by shifting the decimal point. It is expressed as the product of a decimal term and 10 raised to some power. Significant figures are used to express a measurement in scientific notation. The significant figures reflect the closeness of measured values to the standard values.

Interpretation Introduction

(f)

Interpretation:

The calculations are to be expressed by using correct number of significant figures.

Concept introduction:

Scientific notation is used to write large numbers by shifting the decimal point. It is expressed as the product of a decimal term and 10 raised to some power. Significant figures are used to express a measurement in scientific notation. The significant figures reflect the closeness of measured values to the standard values.

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Chapter 1 Solutions

Chemistry for Today: General, Organic, and Biochemistry
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