It’s 3 because iv done this before
Explanation:
It is given that r = 0.283 nm. As 1 nm =
.
Hence, 0.283 nm = 
- Formula for coulombic energy is as follows.

where, e =
C
= 

= 
- As 1 eV =

So, 1 J = 
Hence, U = 
= 8.9 eV
- Also, 1 J =

=
kJ/mol
Therefore, U =
kJ/mol
= 
Answer:
catalyst
Explanation:
this help toalter or speed up the rate of reaction could be the most to slow it
Answer: They are are simular because when the wax cools down its not hot or it cools down it is the same with hot water it cools after along while.
Explanation: