What is true of a sample of gas as temperature is increased?
2 answers:
Answer: The particles move faster, and their average kinetic energy increases.
Explanation:
Kinetic energy is the energy possessed by an object by virtue of its motion.
Average kinetic energy is defined as the average of the kinetic energies of all the particles present in a system. It is determined by the equation:
K= kinetic energy
R= gas constant
T= temperature
From above, it is visible that kinetic energy is directly related to the temperature of the system.
So, if temperature is more, average kinetic energy of the system is more and thus speed of the molecules will be more.Thus the molecules will move faster.
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Answer:
a)
b)
Explanation:
a) The reaction:
The free-energy expression:
The element wich is reduced is the Fe and the one that oxidates is the Mg:
The electrons transfered (n) in this reaction are 2, so:
b) If you have values of enthalpy and enthropy you can calculate the free-energy by:
with T in Kelvin