Breaking bond requires energy. The bond between the carbon and hydrogen is broken when the energy is absorbed. The enthalpy is defined to be the energy taken to break the one mole of the stated carbon and hydrogen bond. Thus a should be the correct answer
Answer:
the spring be displaced by 25.0 cm
Explanation:
The computation is shown below:
As we know that
F= -K × x
So,

Now

= -0.250m
= 25.0 cm
Hence, the spring be displaced by 25.0 cm
Look that one up in you text book PG:678 that is if you got the same book as my friend<span />
Answer:
C
Explanation:
gravity is a pulling force according to Newton
Concave makes things smaller and convex makes things bigger