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Sagot :
A gas bottle contains 8. 61×1023 oxygen molecules at a temperature of 359. 0 k then the thermal energy of the gas is 6.35KJ.
What is thermal energy?
Thermal energy is the energy contained within a system which is responsible for its temperature. Heat is also termed as flow of thermal energy.
Thermal energy is directly proportional to the temperature. As temperature increase thermal energy increases.
Given,
temperature = 395K
Number of oxygen molecules= 8.61 × 10^(23)
Firstly we will calculate the number of moles = N/A
where A is the avagadro number = 6.022 × 10^(23)
number of moles = 8.61 × 10^(23)/6.022 ×10^(23)
number of moles = 1.42moles
Using the energy equation,
E = 3/2 × nRT
where R is the gas constant = 8.314J/molK
E = 3/2 × 1.42 × 8.314 × 359
= 6357.4J
= 6.35KJ
Thus, we found that the thermal energy of the gas is 6.35KJ.
learn more about thermal energy:
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