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SVEN [57.7K]
3 years ago
13

Given the molar specific heat cv of a gas at constant volume, you can determine the number of degrees of freedom s that are ener

getically accessible. for example, at room temperature cis-2-butene, c4h8, has molar specific heat cv=70.6jmol⋅k. how many degrees of freedom of cis-2-butene are energetically accessible?
Chemistry
2 answers:
Ksju [112]3 years ago
8 0
The molar specific heat Cv = R s / 2
70.6 J/mol.K = (8.314 J/mol.K) * s / 2
So the number of degrees of freedom are:
s = 16.98 = 17
andrew11 [14]3 years ago
4 0

The correct answer is 17

The explanation:

To get how many degrees of freedom of Cis-2-butene we are going to use this formula of the molar specific heat:

Cv = R.s / 2

when Cv is the molar specific heat = 70.6 J/mol.K

and R is the ideal gas constant = 8.314 J/mol.K

and S is the degrees of freedom of cis-2-butene : it is the number of independent coordinates to specify the motion of a molecule.

so by substitution:

70.6 J/mol.K = [8.314 J/mol.K] * s / 2

So, the number of degrees of freedom = s = 16.98 ≈ 17

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4 0
2 years ago
use the heisenberg uncertainty principle to calculate the uncertainity in meters in the position of 0.68g and traveling at a vel
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Answer:

7.7439×10⁻³¹ m

Explanation:

The expression for Heisenberg uncertainty principle is:

\Delta x\times \Delta v=\frac {h}{4\times \pi\times m}

Where m is the mass of the microscopic particle

h is the Planks constant

Δx is the uncertainty in the position

Δv is the uncertainty in the velocity

Given:

mass = 0.68 g = 0.68×10⁻³ kg

Δv = 0.1 m/s

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Applying the above formula as:

\Delta x\times 0.1=\frac {6.62\times 10^{-34}}{4\times \frac {22}{7}\times 0.68\times 10^{-3}}

<u>Δx = 7.7439×10⁻³¹ m</u>

8 0
3 years ago
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5.492*10^10

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2 years ago
when an action potential abides by the all-or-nothing principle, once it reaches its threshold it moves all the way down the axo
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Answer:

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2 years ago
What trend in ionization energy occurs across a period on the periodic table?
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The trend  in ionization energy that occurs  across  a period   on  periodic table is that

Ionization  energy of elements within a period  generally increases  from left to the right.

<u><em>explanation</em></u>


 Ionization energy  is energy  required to remove an electron from gaseous  atom or ion.

 The  ionization energy  increase across the period because, as  you move  across  the period (from the left to  the right)   the atomic radius  decrease.  

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3 years ago
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