Answer:
The kinetic energy of a molecule of carbon tetrachloride is 8.29 zJ.
Explanation:
The kinetic energy of a molecule of carbon tetrachloride is given by:

Where:
m: is the mass
v: is the speed = 255 m/s
To find the mass we need to find the molar mass for CCl₄, and use the Avogadro's number, knowing that in 1 mol of carbon tetrachloride we have 6.022x10²³ molecules:
A (C) = 12.011 g/mol
A (Cl) = 35.45 g/mol
The molar mass (M) of CCl₄ is:

Now, the mass of 1 molecule of CCl₄ is:

Finally, the kinetic energy of a molecule of carbon tetrachloride is:

Therefore, the kinetic energy of a molecule of carbon tetrachloride is 8.29 zeptoJoule.
I hope it helps you!
Answer: I believe it is artificial selection (not certain though)
Explanation: modern day dogs have been bread an domesticated to be used by humans in ways we see fit.
Answer:
ano........................................................
The air molecules that are surrounding the metal will speed up, and the molecules in the metal will slow down.