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Because calcium carbonate is the most important impurity in water to produce hardness.
Temporary hardness of water: CaHCO3, MgHCO3 Permanent hardness of water: CaSO4, MgSO4
He originally came up with the scale when classifying a private collection. He classified them by their physical characteristics rather than their chemical composition, using their relative hardness.
Hardness in water is usually characterised as temporary or permanent. Both are due to the presence of calcium or magnesium ions. If they are present as the hydrogen carbonate, when the water is boiled this is converted to the carbonate which precipitates out as a solid, leaving water which is no longer hard, so this is called temporary hardness. If they are present as the sulfate the solution is unaffected by boiling, and this is called permanent hardness.
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Because calcium carbonate is the most important impurity in water to produce hardness.
The hardness of MINERALS.
The Mohs scale of mineral hardness is generally used to determine the hardness of a mineral. The Mohs scale rates the ability of mineral to scratch or be scratched by another mineral.
Hardness is a breaking strength measurement of pellet as multiparticulate dosage form prepared with water (granulation liquid). This hardness is a very important in assessment or characterization of pellet, a good hardness is preferable for coating step of pellet.
Well. You can do many things like use the Mohs Hardness Scale or determine the hardness by the streak.
A mineral's resistance to being scratched is known as it's hardness. You can determine hardness by scratching it with another material whose hardness is already known. If it can be scratched, then the hardness is lower. If the unknown leaves a scratch on the known material, then its hardness is higher.
The Mohs scale is used to determine the relative hardness of minerals.
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The type of fatty acids in the triglycerides, the amount of water present and if food additives are present.
Magnesium sulfate (MgSo4) does not cause hardness of water.
The Mohs scale is used to determine the relative hardness of minerals.
Salt is sometimes used to remove water hardness. Borax and soda are generally used as well to remove water hardness.