As the solar oven operate, what happens to the kinetic energy of the particles of matter in the air and the food inside
1 answer:
Answer:
The average kinetic energy of the particles of matter in the air and the food inside increases
Explanation:
The relationship between the average Kinetic energy and temperature is given by the following formula
K = 3×R×T/(2×)
Where;
R = The universal gas constant = 8.314 J/(mol·K)
= Avogadro's number = 6.02 × 10²³ atoms/mol
T = The temperature of the gases in Kelvin
Given that a solar oven is able to raise the temperature to about 200°F, food cooks slower than in a conventional oven
However, given that the temperature and the average kinetic energy are directly related, the average kinetic energy rises.
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Answer: The standard free energy change for a reaction in an electrolytic cell is always positive.
Explanation:
Electrolytic cells use electric currents to drive a non-spontaneous reaction forward.
Relation of standard free energy change and emf of cell
where,
= standard free energy change
n= no of electrons gained or lost
F= faraday's constant
= standard emf
= standard emf = -ve , for non spontaneous reaction
Thus
Thus standard free energy change for a reaction in an electrolytic cell is always positive.