When two air masses meet together, the boundary between the two is called a weather front. At a front, the two air masses have different densities, based on temperature, and do not easily mix. One air mass is lifted above the other, creating a low pressure zone.
Answer:
The amount of energy required to break the ionic bonds in CaF2.
Answer:
Volume: 20!
Density: 2!
Explanation:
Volume is how much a liquid can take up space in a container! so 50- 30= 20! then the mass is 10, do 20 divided by 10 and u get 2! for the density!
Answer:
Option (B) pH > 2.34 and pH < 9.60.
Explanation:
In a zwitterionic structure, overall negative charge should be 0.
It means, for glycine, the two functional groups e.g. 
and -COOH should bear equal and opposite charges in it's zwitterionic structure.
of -COOH (in glycine) = 2.34
Therefore, at a pH > 2.34, -COOH group of glycine exists predominantly as 
.
of (in glycine) = 9.60
Therefore, at a pH < 9.60, group of glycine exists predominantly as 
.
Hence we can say that at 2.34 < pH < 9.60, glycine exists predominantly in zwitterionic form due to presence of and in equal amount.
