Answer:
Gas
Explanation:
Molecules in the solid phase have the least amount of energy, while gas particles have the greatest amount of energy. The temperature of a substance is a measure of the average kinetic energy of the particles.
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(4) 615 m
Explanation:
From the table we see that the speed of sound in air at 20 °C is 343 m/s. Knowing this we devise the following reasoning:
if the sound travel through the air 343 meters in 1 second
then the sound travel through the air X meters in 2.38 seconds
X = (2.38 × 343) / 1 = 816.35 meters
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speed of sound
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The answer is H—F. Fluorine is the most electronegative of the four halogens (and, in fact, of all the elements), so it does the best job of gathering the shared electrons to itself. Therefore, the bond with F is the most polar
The reaction above is a spontaneous reaction
Cu^2+ + 2Br^- --> Cu + Br2
<h3>What is spontaneous redox reaction?</h3>
A spontaneous redox reaction is a special type of redox reaction which involves the release of energy where the electrons are transferred from from an anode to the cathode
General spontaneous redox reactions is found mostly in electrochemical cells
So therefore, the reaction above is a spontaneous reaction.
Cu^2+ + 2Br^- --> Cu + Br2
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