What is the average kinetic energy in joules of nitrogen molecules at room temperature (20°C)? The average kinetic energy of nitrogen molecules is Incorrect J. (Note: You can enter numbers in scientific notation by using the "E" notation. e.g. To type in 3.14×10−113.14×10-11, you would type in "3.14E-11".) What is the average kinetic energy in joules of hydrogen atoms on the 5200°C surface of the Sun? The average kinetic energy is Correct J. What is the average kinetic energy of helium atoms in a region of the solar corona where the temperature is 3 × 105 K? The average kinetic energy is Correct J.
Energy transfer
The flow of energy from one region to another region is referred to as energy transfer. Since energy is quantitative; it must be transferred to a body or a material to work or to heat the system.
Molar Specific Heat
Heat capacity is the amount of heat energy absorbed or released by a chemical substance per the change in temperature of that substance. The change in heat is also called enthalpy. The SI unit of heat capacity is Joules per Kelvin, which is (J K-1)
Thermal Properties of Matter
Thermal energy is described as one of the form of heat energy which flows from one body of higher temperature to the other with the lower temperature when these two bodies are placed in contact to each other. Heat is described as the form of energy which is transferred between the two systems or in between the systems and their surrounding by the virtue of difference in temperature. Calorimetry is that branch of science which helps in measuring the changes which are taking place in the heat energy of a given body.
Answer below questions using the relationship between temperature and microscopic kinetic energy.
Note: It's not easy to have an intuitive feel for microscopic physical quantities. Use your answer to part (a) to get a sense of how much kinetic energy atoms in the Sun have.
Hint
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What is the average kinetic energy in joules of nitrogen molecules at room temperature (20°C)?
The average kinetic energy of nitrogen molecules is Incorrect J.
(Note: You can enter numbers in scientific notation by using the "E" notation. e.g. To type in 3.14×10−113.14×10-11, you would type in "3.14E-11".) -
What is the average kinetic energy in joules of hydrogen atoms on the 5200°C surface of the Sun?
The average kinetic energy is Correct J.
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What is the average kinetic energy of helium atoms in a region of the solar corona where the temperature is 3 × 105 K?
The average kinetic energy is Correct J.
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