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Sodium chloride is not the cause of water hardness.
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∙ 10y ago
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Is salt strong?
The Mohs hardness of of NaCl is 2,5.
What is the hardness of Flint according to the mohs scale of hardness?
flint is a type of quartz, so it has a hardness of about 7 on the mohs scale of hardness
What is the Brinell hardness test used for?
The Brinell hardness test is a standardized test in material science. It measures the hardness of a metal by measuring the indentation on the material caused by an indenter.
What is the hardness of flint?
Flint is a type of Quartz, and Quartz is a 7 on the Mohs Hardness Scale
What are the factors on which hardness of a material depends?
Hardness of a material depends on the type of bonding between atoms.
Why temporary hardness is removed from water by boiling but permanent hardness is not?
Permanent hardness is hardness (mineral content) that cannot be removed by boiling. It is usually caused by the presence in the water of calcium and magnesium sulphates or chlorides which become more soluble as the temperature rises.
What is the hardness of fingernails?
Type your answer here... 5
If you weighed 79.00 grams of NaCl how many mole of NaCl did you weigh?
I'll see if I can type it out for you.. 79g NaCl x (1 mol NaCl)/(58.44g NaCl) = 1.35 mol NaCl 1 mol NaCl = 58.44g (because Na is 22.99g and Cl is 35.45g)
What are the two form of hardness found in water?
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.
Hardness of sodium chloride?
Sodium Chloride IS hard, just brittle, that's why it breaks apart in your hands. The hardness of sodium chloride is 2,5 on the Mohs scale.
Was the hardness of water increased or decreased by boiling?
1. Only the temporary hardness of water (caused by bicarbonates) is decreased by boiling: bicarbonates were transformed in insoluble carbonates and these compounds become a precipitate. 2. The permanent hardness is not influenced by temperature.
What is the range of hardness found on the chart How does this compare with Moh's hardness scale.?
what type of breakage is more common deavage or fracture
