Na+ ion in sodium chloride is attracted to the oxygen side of the water molecules, while the Cl- ion is attracted to the hydrogens' side of the water molecule
this causes the sodium chloride to split in water, and the sodium chloride dissolves into separate Na+ and Cl- atoms
Calorie (with a lowercase “c”) is the energy needed to increase the temperature of water by one degree Celsius.
Calorie (uppercase “c”) is the equivalent to a kilocalorie (or 1000 calories)
An element is also a pure substance. The reason for this is because an element contains only one type of particle.
Option A is correct
Answer: 0.69 m/ mile.
Explanation:
The altitude gradient between two cities X and Y = 
Given: Two cities are separated by 200 miles.
City X has an altitude of 122 meters.
City Y has an altitude of 260 meters.
The altitude gradient between two cities X and Y =
Hence, the altitude gradient between the two cites = 0.69 m/ mile.
I believe the answer would be true
