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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: The graph (below) shows the distribution of molecular velocities.  How many of the statements are true?At a given temperature, curve A represents gas particles with the smallest molar massFor a given

Solution: The graph (below) shows the distribution of molecular velocities.  How many of the statements are true?At a given temperature, curve A represents gas particles with the smallest molar massFor a given

Problem

The graph (below) shows the distribution of molecular velocities.  How many of the statements are true?

  • At a given temperature, curve A represents gas particles with the smallest molar mass
  • For a given gas sample, curve D represents the highest temperature
  • At a given temperature, curve D represents gas particles with the highest molar mass
  • For a given gas sample, the broader the velocity distribution, the lower the temperature
  1. 0                      b) 1                  c) 2                  d) 3                  e) 4 
Solution

We’re being asked how many statements are true involving the distribution of molecular velocities


In the graph, the y-axis is the relative number of particles while the x-axis is the molecular speed. We can think of the molar mass of a gas as being related to the number of particles ( molar mass =  particles).


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