Answer:
B
Explanation:
the energy of two separate hydrogen atoms decreases as they approach each other, and the single electrons on each atom are shared to form a covalent bond.
Answer:
The answer is "0.35".
Explanation:
please find the complete question in the attached file.
Mass of 

Molar mass of

No of moles in

Mass of water 

The molar mass of water 

moles of water
:

Molfraction of acetic acid:

We have as a reagent a salt, lead nitrate (Pb(NO3)2), and an unknown solution that gives us as a product lead chloride (PbCl2). That is, the solution must contain chlorine.
If a chlorine solution is used we will have the following reaction:

So, with a chlorine solution, we will have a white precipitate of lead chloride.