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g100num [7]
4 years ago
14

Calculate the root mean square (rms) average speed of the atoms in a sample of xenon gas at 0.15 atm and -55c

Chemistry
1 answer:
GrogVix [38]4 years ago
7 0
Answer:
Vrms is 149.7266 m/sec

Explanation:
The root means square velocity of a gas can be calculated as follows:
Vrms = \sqrt{ \frac{3RT}{M}}
where:
R is the ideal gas constant = 8.3145
T is absolute temperature = -55 + 273 = 118 degrees kelvin
M is the molar mass of the gas = 131.293 grams = 0.131293 kg

Substituting with these givens in the above equation, we would find that the Vrms is 149.7266 m/sec

Hope this helps :)
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Explanation:

The reaction equation will be as follows.

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Therefore, calculate the number of moles of sodium as follows.

       No. of moles = \frac{mass}{\text{molar mass}}

                             = \frac{4500 g}{23 g/mol}    (as 1 kg = 1000 g)

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Relation between electrical energy and Q is as follows.

               E = Q \times V

Hence, putting the given values into the above formula and then calculate the value of electricity as follows.

              E = Q \times V

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Hence,      \frac{9.4 \times 10^{7}}{2.77 \times 10^{-7}} kWh

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