The hardness of water is a measurement of how acidic it is. true or false

The hardness of the water is given by the presence of calcium and magnesium carbonates. The mixing of these minerals in water turns the water more alkaline.
The Langelier saturation index uses the pH to predict the calcium carbonate stability of water. So, through the pH, it is possible to know whether a water is more or less acidic.

It is the doctrine that the us had the right and duty to expand throughout north america. it just means they believed they had the right to expand westward and they did! they stated with the 13 colonies and then they kept moving gaining different territories throughout the years