<span>A warm front occurs when a cold air mass retreats and is replaced by a warm air mass</span>
Answer:

27.70 is
for the reaction.
Explanation:

The equilibrium constant of the reaction = 
The expression of equilibrium constant is given by :
..[1]

The equilibrium constant expression for above reaction can be written as:
![K_c'=\frac{[COBr_2]^2}{[CO]^2[Br]^2}](https://tex.z-dn.net/?f=K_c%27%3D%5Cfrac%7B%5BCOBr_2%5D%5E2%7D%7B%5BCO%5D%5E2%5BBr%5D%5E2%7D)
( from [1])

27.70 is
for the reaction.
Answer:
temperature, refractive index, density, and hardness of an object
Explanation:
it is a bulk property, meaning that it is a physical property of a system that does not depend on the system size or the amount of material in the system
Answer:
1) No, 2) Yes, 3) Yes
Explanation:
Refer to solubility rules to understand if a precipitate occurs between a mix of solutions.
Answer: 0.19M
Explanation: 
Using Molarity equation:

= molarity of acid
= volume of acid
= molarity of base
= volume of base


Thus the concentration of the
solution is 0.19M.