One single covalent bond, hope this helps!
Answer:
94.44
Explanation:
Volume is equal to Mass/Density so therefore, you do the mass which is 68.0 g/0.72 g/mL which is the density and get 94.44 mL because the g cancel each other out when it comes to the label!
A vapor is which state of matter?
C. Gas.
So, I don't know the answer for b but I think I found the answer for a.
I sincerely hope this isn't wrong
Br2 is the correct answer