Textbook Question
On a typical day, Sandra may encounter several situations involving measurement. State the name and type of measurement indicated by the units in each of the following:
a. The clotting time for a blood sample is 15 s.
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Ch.2 Chemistry and Measurements
Timberlake14thChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9781292472249
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Table of contents
- Ch.1 Chemistry in Our Lives19
- Ch.2 Chemistry and Measurements80
- Ch.3 Matter and Energy53
- Ch.4 Atoms and Elements58
- Ch.5 Nuclear Chemistry42
- Ch.6 Ionic and Molecular Compounds57
- Ch.7 Chemical Quantities and Reactions38
- Ch.8 Gases30
- Ch.9 Solutions50
- Ch.10 Acids and Bases and Equilibrium64
- Ch.11 Introduction to Organic Chemistry: Hydrocarbons77
- Ch.12 Alcohols, Thiols, Ethers, Aldehydes, and Ketones82
- Ch.13 Carbohydrates54
- Ch.14 Carboxylic Acids, Esters, Amines, and Amides91
- Ch.15 Lipids61
- Ch.16 Amino Acids, Proteins, and Enzymes84
- Ch.17 Nucleic Acids and Protein Synthesis86
- Ch.18 Metabolic Pathways and ATP Production73
Timberlake14thChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9781292472249Not the one you use?Change textbook
Chapter 2, Problem 7c
On a typical day, Sandra may encounter several situations involving measurement. State the name and type of measurement indicated by the units in each of the following:
c. An antacid tablet contains 1.0 g of calcium carbonate.
Verified step by step guidance1
Identify the unit provided in the problem: The unit given is 'g', which stands for grams.
Determine the type of measurement associated with the unit 'g': Grams are a unit of mass, which is used to measure the amount of matter in an object.
Recognize the substance being measured: The problem specifies calcium carbonate, which is a chemical compound commonly found in antacid tablets.
State the name of the measurement: The name of the measurement is 'mass' because grams measure the quantity of matter.
Conclude the type of measurement: The type of measurement indicated by the unit 'g' is quantitative, as it provides a numerical value for the mass of calcium carbonate.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Mass Measurement
Mass measurement refers to the quantification of the amount of matter in an object, typically expressed in grams (g) or kilograms (kg). In the context of the antacid tablet, the measurement of 1.0 g indicates the mass of calcium carbonate present, which is crucial for understanding dosage and effectiveness in medicinal applications.
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Calcium Carbonate
Calcium carbonate is a chemical compound with the formula CaCO3, commonly used in antacids to neutralize stomach acid. Understanding its role and properties is essential for evaluating the effectiveness of the antacid tablet, as it directly relates to how it alleviates symptoms of heartburn or indigestion.
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Units of Measurement
Units of measurement provide a standard for quantifying physical quantities. In this case, grams (g) is the unit used to express the mass of calcium carbonate in the antacid tablet. Familiarity with different units and their conversions is important for accurate scientific communication and calculations.
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Related Practice
Textbook Question
On a typical day, Sandra may encounter several situations involving measurement. State the name and type of measurement indicated by the units in each of the following:
b. A premature baby weighs 1.9 kg.
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Textbook Question
On a typical day, Sandra may encounter several situations involving measurement. State the name and type of measurement indicated by the units in each of the following:
d. An infant has a temperature of 39.2 °C.
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Textbook Question
Use the metric ruler to measure the length in each of the following, and write the measurement, the estimated digit, and the number of significant figures:
a. <IMAGE>
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Textbook Question
In which of the following pairs do both numbers contain the same number of significant figures?
a. 11.0 m and 11.00 m
b. 0.0250 m and 0.205 m
c. 0.000 12 s and 12 000 s
d. 250.0 L and 2.5 × 10-2 L
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