What happens to the average kinetic energy of the molecules of a warm substance when the temperature of the substance is slightl
2 answers:
Answer: Option (b) is the correct answer.
Explanation:
Average kinetic energy is defined as half of mass of gas times the square of root mean square velocity.
Mathematically, Average K.E =
Also, Kinetic energy =
So, when there is increase in temperature then there will be increase in movement of the molecules. As a result, kinetic energy will also increase. Since, kinetic energy is proportional to temperature.
Therefore, with decrease in temperature there will be decrease in average kinetic energy of the molecules.
Thus, we can conclude that the average kinetic energy of the molecules of a warm substance also decreases when the temperature of the substance is slightly decreased.
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<h2>Answer:</h2>
<h2>Explanations</h2>
The complete balanced equation for the given reaction is expressed as;
Given the following parameters
Mass of CH4 = 5.90×10^−3 g = 0.0059grams
Determine the moles of methane
According to stoichimetry, 1 mole of methane produces 2 moles of water, hence the moles of water required will be:
Determine the mass of water produced
Therefore the mass of water produced from the complete combustion of 5.90×10−3 g of methane is 1.33 * 10^-2grams