Domanda del libro di testo
Convert between energy units. c. 4.99 × 103 kJ to kWh
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Ch.6 - Thermochemistry
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
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Capitolo 6, Problema 35
Suppose that a person eats 2387 Calories per day. Convert this amount of energy into each unit. a. J b. kJ c. kWh
Guida verificata passo dopo passo1
Understand that 1 Calorie (with a capital 'C', also known as a kilocalorie) is equivalent to 1000 calories (with a lowercase 'c', also known as small calories).
Recognize that 1 calorie is defined as the amount of energy needed to raise the temperature of 1 gram of water by 1 degree Celsius, and it is equivalent to 4.184 joules.
Convert the daily energy intake from Calories to joules using the conversion factor: 1 Calorie = 4184 joules.
Convert the total joules to kilowatt-hours (kWh), knowing that 1 kWh = 3.6 x 10^6 joules.
Calculate the total energy in kWh by dividing the total joules by the number of joules in one kWh.
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Calorie to Joule Conversion
A Calorie (specifically, a kilocalorie) is a unit of energy defined as the amount of energy needed to raise the temperature of one kilogram of water by one degree Celsius. In scientific contexts, energy is often expressed in Joules, where 1 Calorie is equivalent to approximately 4.184 Joules. Understanding this conversion is essential for translating dietary energy into other energy units.
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Percorso guidato
01:56
Conversion Factors
Joule to Kilowatt-Hour Conversion
A kilowatt-hour (kWh) is a unit of energy equivalent to one kilowatt (1,000 watts) of power used for one hour. To convert Joules to kilowatt-hours, the conversion factor is used: 1 kWh equals 3.6 million Joules (3.6 x 10^6 J). This conversion is crucial for expressing energy consumption in terms familiar to electrical energy usage.
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Percorso guidato
01:56Conversion Factors
Energy Units in Context
Different contexts require different units of energy. In nutrition, energy is often measured in Calories, while in physics and engineering, Joules and kilowatt-hours are more common. Understanding the context of energy measurement helps in making appropriate conversions and comprehending the implications of energy consumption in daily life.
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02:13SI Units
Pratica correlata
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A particular frost-free refrigerator uses about 745 kWh of electrical energy per year. Express this amount of energy in each unit. c. Cal
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Domanda del libro di testo
Which statement is true of the internal energy of a system and its surroundings during an energy exchange with a negative ΔEsys? a. The internal energy of the system increases and the internal energy of the surroundings decreases. b. The internal energy of both the system and the surroundings increases. c. The internal energy of both the system and the surroundings decreases. d. The internal energy of the system decreases and the internal energy of the surroundings increases.
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