Answer:
it should be the second one since London dispersion causes interaction between molecules.
hope I helped.
Answer:

Explanation:
The equation for density is:

We plug in the given values:


Answer:
3Mg(NO3)2(aq)+2Na3PO4(aq)⇒Mg3(PO4)2(s)+6NaNO3(aq)
Explanation: