onlymyworld27

21.05.2021 • 

Chemistry

Which hypothesis describes the behavior of molecules when a substance changes from a gas to a liquid? Your
A. The average speed of the molecules increases, because they have lower energy in the liquid state.
B. The average speed of the molecules decreases, because they have lower energy in the liquid state.
C. The average speed of the molecules decreases, because they have higher energy in the liquid state.
D. The average speed of the molecules increases, because they have higher energy in the liquid state.

Ответ:

vontie

27.09.2022

Chemistry

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The answer in here is d)48 lit. We know this when we do the following procedure:
kerosene=18%
so petrol =82%
after kerosene =15%
petrol=85%
so 3% =8
lit so total kerosene in the mixture =(8x18/3) =48 lit
Hope this is useful

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