The molar mass of the unknown gas should be determined by using the given condition that the gas effuses at one third rate as fast as that of helium gas. Concept introduction: Effusion: The movement of gas particles through a small hole is defined as effusion. The rate of effusion for a gas is inversely proportional to the square root of the mass of gas particles. The root mean square velocity μ is defined as the measure of velocity of particle in gas. It is the method to determine the single velocity value for particles. Root mean square velocity can be determined, μ r m s = ( 3 R T M ) 1 / 2 (1) ( gas constant ) R = 8 . 3 1 4 J K m o l M = M o l a r m a s s Molar mass: The molar mass of a substance is determined by dividing the given mass of substance by the amount of the substance.
The molar mass of the unknown gas should be determined by using the given condition that the gas effuses at one third rate as fast as that of helium gas. Concept introduction: Effusion: The movement of gas particles through a small hole is defined as effusion. The rate of effusion for a gas is inversely proportional to the square root of the mass of gas particles. The root mean square velocity μ is defined as the measure of velocity of particle in gas. It is the method to determine the single velocity value for particles. Root mean square velocity can be determined, μ r m s = ( 3 R T M ) 1 / 2 (1) ( gas constant ) R = 8 . 3 1 4 J K m o l M = M o l a r m a s s Molar mass: The molar mass of a substance is determined by dividing the given mass of substance by the amount of the substance.
Solution Summary: The author explains that the molar mass of the unknown gas is determined by using the given condition that it effuses at one third rate as fast as that of helium gas.
Interpretation: The molar mass of the unknown gas should be determined by using the given condition that the gas effuses at one third rate as fast as that of helium gas.
Concept introduction:
Effusion:
The movement of gas particles through a small hole is defined as effusion. The rate of effusion for a gas is inversely proportional to the square root of the mass of gas particles.
The root mean square velocity μ is defined as the measure of velocity of particle in gas. It is the method to determine the single velocity value for particles.
Root mean square velocity can be determined,
μrms=(3RTM)1/2 (1)
(gas constant)R=8.314JKmolM=Molarmass
Molar mass: The molar mass of a substance is determined by dividing the given mass of substance by the amount of the substance.
Unshared, or lone, electron pairs play an important role in determining the chemical and physical properties of organic compounds.
Thus, it is important to know which atoms carry unshared pairs.
Use the structural formulas below to determine the number of unshared pairs at each designated atom.
Be sure your answers are consistent with the formal charges on the formulas.
CH.
H₂
fo
H2
H
The number of unshared pairs at atom a is
The number of unshared pairs at atom b is
The number of unshared pairs at atom c is
HC
HC
HC
CH
The number of unshared pairs at atom a is
The number of unshared pairs at atom b is
The number of unshared pairs at atom c is
Draw curved arrows for the following reaction step.
Arrow-pushing Instructions
CH3
CH3 H
H-O-H
+/
H3C-C+
H3C-C-0:
CH3
CH3 H
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Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell