All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: Mars has an atmosphere composed almost entirely of carbon dioxide, with an average temperature of -63°C.What is the rms speed of a molecule in Mars' atmosphere? Assume  R = 8.315 J/mol•K.Express your

Problem

Mars has an atmosphere composed almost entirely of carbon dioxide, with an average temperature of -63°C.

What is the rms speed of a molecule in Mars' atmosphere? Assume  R = 8.315 J/mol•K.

Express your answer to two significant figures and include the appropriate units.

Solution

The root mean square (rms) speed predicts the speed of gaseous molecules with a certain kinetic energy at a specific temperature




Where: R is the universal gas constant (8.315 J/mol-K)

           T is the temperature in Kelvin

           M is the molar mass of the gas (in kg/mol)


We are asked to determine the urms of carbon dioxide in Mars where the temperature is -63°C.


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