Domanda del libro di testo
From the data in Table 18.1, calculate the partial pressures of carbon dioxide and argon when the total atmospheric pressure is 1.05 bar.
1206
views
Ch.18 - Chemistry of the Environment
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232
Non è quello che usi tu?Cambia libro di testoScegli un libro di testo diverso
TOC.tableOfContents
- Ch.1 - Introduction: Matter, Energy, and Measurement177
- Ch.2 - Atoms, Molecules, and Ions231
- Ch.3 - Chemical Reactions and Reaction Stoichiometry216
- Ch.4 - Reactions in Aqueous Solution189
- Ch.5 - Thermochemistry175
- Ch.6 - Electronic Structure of Atoms168
- Ch.7 - Periodic Properties of the Elements150
- Ch.8 - Basic Concepts of Chemical Bonding177
- Ch.9 - Molecular Geometry and Bonding Theories200
- Ch.10 - Gases179
- Ch.11 - Liquids and Intermolecular Forces113
- Ch.12 - Solids and Modern Materials154
- Ch.13 - Properties of Solutions157
- Ch.14 - Chemical Kinetics199
- Ch.15 - Chemical Equilibrium128
- Ch.16 - Acid-Base Equilibria164
- Ch.17 - Additional Aspects of Aqueous Equilibria163
- Ch.18 - Chemistry of the Environment105
- Ch.19 - Chemical Thermodynamics164
- Ch.20 - Electrochemistry171
- Ch.21 - Nuclear Chemistry122
- Ch.22 - Chemistry of the Nonmetals82
- Ch.23 - Transition Metals and Coordination Chemistry79
- Ch.24 - The Chemistry of Life: Organic and Biological Chemistry16
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232Non è quello che usi tu?Cambia libro di testo
Capitolo 18, Problema 13b
Air pollution in the Mexico City metropolitan area is among the worst in the world. The concentration of ozone in Mexico City has been measured at 441 ppb (0.441 ppm). Mexico City sits at an altitude of 7400 feet, which means its atmospheric pressure is only 0.67 atm. (b) How many ozone molecules are in 1.0 L of air in Mexico City? Assume T = 25 °C.
Guida verificata passo dopo passo1
Convert the concentration of ozone from ppm to a fraction: 0.441 ppm means 0.441 parts of ozone per million parts of air, which is 0.441/1,000,000.
Use the ideal gas law to find the number of moles of air in 1.0 L at the given conditions. The ideal gas law is PV = nRT, where P is pressure (0.67 atm), V is volume (1.0 L), R is the ideal gas constant (0.0821 L·atm/mol·K), and T is temperature in Kelvin (25 °C = 298 K).
Calculate the total moles of air using the rearranged ideal gas law: n = PV/RT.
Determine the moles of ozone by multiplying the total moles of air by the fraction of ozone (0.441/1,000,000).
Convert the moles of ozone to molecules using Avogadro's number (6.022 x 10^23 molecules/mol).
Risposta video verificata per un problema simile:
Questa soluzione video è stata consigliata dai nostri tutor come utile per risolvere questo problema.
Durata del video:
3mConcetti chiave
Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.
Ideal Gas Law
The Ideal Gas Law relates the pressure, volume, temperature, and number of moles of a gas through the equation PV = nRT. This law is essential for calculating the number of gas molecules in a given volume under specific conditions of temperature and pressure. In this case, it will help determine how many ozone molecules are present in 1.0 L of air in Mexico City.
Video consigliato:
Percorso guidato
01:15
Ideal Gas Law Formula
Molar Volume of a Gas
At standard temperature and pressure (STP), one mole of an ideal gas occupies 22.4 liters. However, since the conditions in Mexico City differ (lower pressure and a specific temperature), the molar volume will need to be adjusted accordingly. Understanding how to calculate the molar volume under non-STP conditions is crucial for determining the number of ozone molecules in the air.
Video consigliato:
Percorso guidato
00:51The Ideal Gas Law: Molar Mass
Concentration Units (ppb and ppm)
Parts per billion (ppb) and parts per million (ppm) are units used to express the concentration of a substance in a solution or mixture. In this context, the concentration of ozone is given in ppb, which must be converted to a more usable form (like moles or molecules) to find the total number of ozone molecules in 1.0 L of air. Understanding these units is vital for accurate calculations.
Video consigliato:
Percorso guidato
01:38Parts per Million (ppm)
Pratica correlata
Domanda del libro di testo
Air pollution in the Mexico City metropolitan area is among the worst in the world. The concentration of ozone in Mexico City has been measured at 441 ppb (0.441 ppm). Mexico City sits at an altitude of 7400 feet, which means its atmospheric pressure is only 0.67 atm. (a) Calculate the partial pressure of ozone at 441 ppb if the atmospheric pressure is 0.67 atm.
1063
views
Domanda del libro di testo
(a) How are the boundaries between the regions of the atmosphere determined?
325
views
Domanda del libro di testo
(b) Explain why the stratosphere, which is about 35 km thick, has a smaller total mass than the troposphere, which is about 12 km thick.
318
views