교과서 질문
A steel cylinder has a length of 2.16 in, a radius of 0.22 in, and a mass of 41 g. What is the density of the steel in g/cm3?
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Ch.1 - Matter, Measurement & Problem Solving
Tro4th EditionChemistry: A Molecular ApproachISBN: 9780134112831
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TOC.tableOfContents
- Ch.1 - Matter, Measurement & Problem Solving136
- Ch.2 - Atoms & Elements112
- Ch.3 - Molecules, Compounds & Chemical Equations159
- Ch.4 - Chemical Quantities & Aqueous Reactions140
- Ch.5 - Gases118
- Ch.6 - Thermochemistry106
- Ch.7 - Quantum-Mechanical Model of the Atom62
- Ch.8 - Periodic Properties of the Elements103
- Ch.9 - Chemical Bonding I: The Lewis Model104
- Ch.10 - Chemical Bonding II: Molecular Shapes & Valence Bond Theory89
- Ch.11 - Liquids, Solids & Intermolecular Forces73
- Ch.12 - Solids and Modern Material59
- Ch.13 - Solutions110
- Ch.14 - Chemical Kinetics140
- Ch.15 - Chemical Equilibrium78
- Ch.16 - Acids and Bases155
- Ch.17 - Aqueous Ionic Equilibrium176
- Ch.18 - Free Energy and Thermodynamics108
- Ch.19 - Electrochemistry118
- Ch.20 - Radioactivity and Nuclear Chemistry82
- Ch.21 - Organic Chemistry150
1장, 문제 118
The density of iron is 7.86 g/cm3. What is its density in pounds per cubic inch (lb/in3)?
검증된 단계별 안내1
Identify the given density of iron: 7.86 g/cm^3.
Convert grams to pounds using the conversion factor: 1 pound = 453.592 grams.
Convert cubic centimeters to cubic inches using the conversion factor: 1 inch = 2.54 cm, therefore 1 cm^3 = (1/2.54)^3 in^3.
Combine the conversion factors to convert the density from g/cm^3 to lb/in^3.
Perform the unit conversion by multiplying the given density by the appropriate conversion factors.
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이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.
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주요 개념
질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.
Density
Density is defined as mass per unit volume, typically expressed in grams per cubic centimeter (g/cm³) in the metric system. It is a physical property that helps identify substances and can be used to determine whether an object will float or sink in a fluid. Understanding density is crucial for converting between different units of measurement.
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가이드 코스
01:56
Density Concepts
Unit Conversion
Unit conversion involves changing a quantity expressed in one set of units to another set of units. This process is essential in chemistry when comparing or calculating properties like density in different measurement systems, such as converting from metric units (g/cm³) to imperial units (lb/in³). Familiarity with conversion factors is necessary for accurate calculations.
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가이드 코스
01:56Conversion Factors
Conversion Factors
Conversion factors are ratios that express how many of one unit are equal to another unit. For example, to convert grams to pounds, one can use the factor that 1 pound is approximately 453.592 grams. In the context of density, knowing the appropriate conversion factors allows for the accurate transformation of density values between different unit systems.
추천 영상:
가이드 코스
01:56Conversion Factors
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The density of titanium is 4.51 g/cm3. What is the volume (in cubic inches) of 3.5 lb of titanium?
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The proton has a radius of approximately 1.0×10−13 cm and a mass of 1.7×10−24 g. Determine the density of a proton for a sphere V = (4/3)πr3.
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교과서 질문
A thief uses a can of sand to replace a solid gold cylinder that sits on a weight-sensitive, alarmed pedestal. The can of sand and the gold cylinder have exactly the same dimensions (length = 22 and radius = 3.8 cm). a. Calculate the mass of each cylinder (ignore the mass of the can itself). (density of gold = 19.3 g/cm3, density of sand = 3.00 g/cm3) b. Does the thief set off the alarm? Explain.
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교과서 질문
A solid aluminum sphere has a mass of 85 g. Use the density of aluminum to find the radius of the sphere in inches.
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