Chemistry: The Molecular Nature of Matter and Change
Chemistry: The Molecular Nature of Matter and Change
8th Edition
ISBN: 9781259631757
Author: Martin Silberberg Dr., Patricia Amateis Professor
Publisher: McGraw-Hill Education
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Chapter 1, Problem 1.72P

(a)

Interpretation Introduction

Interpretation:

The average mass from each set of data is to be calculated. Also, the most accurate one is to be identified.

Concept introduction:

Precision is defined as the closeness of two measurements with each other. Accuracy refers to the closeness of the measured values to the standard or known value. Some errors also occur in the calculation of the measured quantities.

The two types of errors are as follows:

1. Systematic error: This error is a part of the experimental setup or faulty devices.

2. Random error: This error occurs always and is due to instruments’ precision.

Average mass is calculated by the sum of all the masses divided by the number of masses.

(b)

Interpretation Introduction

Interpretation:

The most precise data is to be identified. Also, whether the most precise data is equal to the most accurate data or not is to be determined.

Concept introduction:

Precision is defined as the closeness of two measurements with each other. Accuracy refers to the closeness of the measured values to the standard or known value. Some errors also occur in the calculation of the measured quantities.

The two types of errors are as follows:

1. Systematic error: This error is a part of the experimental setup or faulty devices.

2. Random error: This error occurs always and is due to instruments’ precision.

Average mass is calculated by the sum of all the masses divided by the number of masses.

(c)

Interpretation Introduction

Interpretation:

The most accurate and the most precise data is to be identified.

Concept introduction:

Precision is defined as the closeness of two measurements with each other. Accuracy refers to the closeness of the measured values to the standard or known value. Some errors also occur in the calculation of the measured quantities.

The two types of errors are as follows:

1. Systematic error: This error is a part of the experimental setup or faulty devices.

2. Random error: This error occurs always and is due to instruments’ precision.

Precision is estimated by the range of the data. The formula to calculate the range is as follows:

  Range=(Largest value)(smallest value)        (2)

(d)

Interpretation Introduction

Interpretation:

The least accurate and the least precise is to be identified.

Concept introduction:

Precision is defined as the closeness of two measurements with each other. Accuracy refers to the closeness of the measured values to the standard or known value. Some errors also occur in the calculation of the measured quantities.

The two types of errors are as follows:

1. Systematic error: This error is a part of the experimental setup or faulty devices.

2. Random error: This error occurs always and is due to instruments’ precision.

Precision is estimated by the range of the data. The formula to calculate the range is as follows:

  Range=(Largest value)(smallest value)        (2)

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Chapter 1 Solutions

Chemistry: The Molecular Nature of Matter and Change

Ch. 1.4 - A landowner wants to spray herbicide on a field...Ch. 1.4 - Prob. 1.6BFPCh. 1.4 - Prob. 1.7AFPCh. 1.4 - Prob. 1.7BFPCh. 1.4 - Mercury melts at 234 K, lower than any other pure...Ch. 1.4 - Prob. 1.8BFPCh. 1.5 - For each of the following quantities, underline...Ch. 1.5 - Prob. 1.9BFPCh. 1.5 - Prob. 1.10AFPCh. 1.5 - Prob. 1.10BFPCh. 1 - Prob. 1.1PCh. 1 - Describe solids, liquids, and gases in terms of...Ch. 1 - Use your descriptions from Problem 1.2 to identify...Ch. 1 - Define physical property and chemical property....Ch. 1 - Prob. 1.5PCh. 1 - Which of the following is a chemical change?...Ch. 1 - Which of the following changes can be reversed by...Ch. 1 - Prob. 1.8PCh. 1 - Prob. 1.9PCh. 1 - The alchemical, medical, and technological...Ch. 1 - How did the phlogiston theory explain combustion? Ch. 1 - Prob. 1.12PCh. 1 - Prob. 1.13PCh. 1 - Prob. 1.14PCh. 1 - Prob. 1.15PCh. 1 - Prob. 1.16PCh. 1 - Prob. 1.17PCh. 1 - Prob. 1.18PCh. 1 - Prob. 1.19PCh. 1 - For each of the following cases, state whether the...Ch. 1 - Prob. 1.21PCh. 1 - Prob. 1.22PCh. 1 - Prob. 1.23PCh. 1 - Prob. 1.24PCh. 1 - Prob. 1.25PCh. 1 - Prob. 1.26PCh. 1 - Prob. 1.27PCh. 1 - What is the length in inches (in) of a 100.-m...Ch. 1 - Prob. 1.29PCh. 1 - Prob. 1.30PCh. 1 - Prob. 1.31PCh. 1 - Prob. 1.32PCh. 1 - Prob. 1.33PCh. 1 - Prob. 1.34PCh. 1 - The speed of light in a vacuum is 2.998 × 108 m/s....Ch. 1 - Prob. 1.36PCh. 1 - Prob. 1.37PCh. 1 - Prob. 1.38PCh. 1 - Prob. 1.39PCh. 1 - A small cube of aluminum measures 15.6 mm on a...Ch. 1 - A steel ball-bearing with a circumference of 32.5...Ch. 1 - Prob. 1.42PCh. 1 - Prob. 1.43PCh. 1 - A 25.0-g sample of each of three unknown metals is...Ch. 1 - Prob. 1.45PCh. 1 - Prob. 1.46PCh. 1 - Prob. 1.47PCh. 1 - Prob. 1.48PCh. 1 - Prob. 1.49PCh. 1 - Prob. 1.50PCh. 1 - Prob. 1.51PCh. 1 - Prob. 1.52PCh. 1 - Prob. 1.53PCh. 1 - Prob. 1.54PCh. 1 - Prob. 1.55PCh. 1 - Round off each number in the following calculation...Ch. 1 - Prob. 1.57PCh. 1 - Prob. 1.58PCh. 1 - Prob. 1.59PCh. 1 - Prob. 1.60PCh. 1 - Write the following numbers in scientific...Ch. 1 - Prob. 1.62PCh. 1 - Prob. 1.63PCh. 1 - Prob. 1.64PCh. 1 - Prob. 1.65PCh. 1 - Prob. 1.66PCh. 1 - Prob. 1.67PCh. 1 - Prob. 1.68PCh. 1 - Which of the following include exact numbers? The...Ch. 1 - Prob. 1.70PCh. 1 - Prob. 1.71PCh. 1 - Prob. 1.72PCh. 1 - The following dartboards illustrate the types of...Ch. 1 - Prob. 1.74PCh. 1 - Prob. 1.75PCh. 1 - Bromine is used to prepare the pesticide methyl...Ch. 1 - Prob. 1.77PCh. 1 - Prob. 1.78PCh. 1 - Prob. 1.79PCh. 1 - Prob. 1.80PCh. 1 - Prob. 1.81PCh. 1 - Prob. 1.82PCh. 1 - Prob. 1.83PCh. 1 - Prob. 1.84PCh. 1 - Prob. 1.85PCh. 1 - Prob. 1.86P
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