Domanda del libro di testo
Identify each of the following changes of state as melting, freezing, sublimation, or deposition:
c. Heat is removed from 125 g of liquid water at 0 °C.
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Ch.3 Matter and Energy
Timberlake14th EditionChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9781292472249
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TOC.tableOfContents
- 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
Timberlake14th EditionChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9781292472249Non è quello che usi tu?Cambia libro di testo
Capitolo 3, Problema 46d
Identify each of the following changes of state as melting, freezing, sublimation, or deposition:
d. Frost (ice) forms on the walls of a freezer unit of a refrigerator.
Guida verificata passo dopo passo1
Step 1: Understand the process described in the problem. Frost forming on the walls of a freezer involves water vapor in the air turning directly into solid ice without becoming liquid first.
Step 2: Recall the definition of deposition. Deposition is the phase change where a substance transitions directly from the gas phase to the solid phase, bypassing the liquid phase.
Step 3: Compare the described process to the definition of deposition. Since water vapor (gas) is turning into ice (solid) directly, this matches the definition of deposition.
Step 4: Confirm that no intermediate liquid phase is involved. The problem explicitly describes frost forming directly from water vapor, which is characteristic of deposition.
Step 5: Conclude that the change of state described in the problem is deposition.
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Deposition
Deposition is the process in which a gas transforms directly into a solid without passing through the liquid state. This occurs when the temperature and pressure conditions favor the solid phase, leading to the formation of solid particles from vapor. An example of deposition is the formation of frost on surfaces, where water vapor in the air freezes directly into ice.
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Percorso guidato
1:50
Tollens' Test Concept 2
Phase Changes
Phase changes refer to the transitions between different states of matter: solid, liquid, and gas. These changes occur due to variations in temperature and pressure, affecting the energy and arrangement of particles. Understanding phase changes is crucial for identifying processes like melting, freezing, sublimation, and deposition, as they describe how substances behave under different conditions.
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Percorso guidato
03:40Physical & Chemical Changes
Thermodynamics
Thermodynamics is the branch of physics that deals with heat, work, and energy transfer. It provides the principles governing phase changes, including the energy required for a substance to change from one state to another. In the context of deposition, thermodynamic principles explain how energy loss from water vapor leads to the formation of frost when it cools and solidifies on surfaces.
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01:18First Law of Thermodynamics
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Using Table 3.9, determine each of the following: d. If expending 3500 kcal is equal to a loss of 1.0 lb, how many days will it take Charles to lose 5.0 lb?
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Domanda del libro di testo
Identify each of the following changes of state as melting, freezing, sublimation, or deposition:
a. Dry ice in an ice-cream cart disappears.
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Domanda del libro di testo
Using Table 3.9, determine each of the following: c. If Charles consumes 1800 kcal per day, he will maintain his weight. Would he lose weight on his new diet?
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Domanda del libro di testo
Using the values for the heat of fusion, specific heat of water, and/or heat of vaporization, calculate the amount of heat energy in each of the following:
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Domanda del libro di testo
Identify each of the following changes of state as melting, freezing, sublimation, or deposition:
b. Snow on the ground turns to liquid water.
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