water that has run over chalk and still has these types of particles in. When mixed with soap solution forms a scum. However, soft water when mixed with soap solution forms a precipitate.
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Water containing some soluble hydrocarbonates of calcium and magnesium as Ca(HCO3)2 and Mg(HCO3)2 - temporary hard water
or
Water containing another salts of calcium and magnesium (as chlorides, sulfates, nitates) - permanent hard water
Total hardness is the sum of temporary and permanent.
Water containing salts of calcium and magnesium as chlorides, sulfates, nitates - impossible to delete by boiling.
assuming you meant Ash, it is a hard wood.
"Hard up" means tough or hardy.
in the water
if there are meant rich kids
Yes.
It is where your float on the water with your penis out !
it means like I'm working hard but it is actually quite fun
Hard water is potable (drinkable).
How can we deal with hard water
No. There is different types of hard water.There is slightly hard, moderately hard, hard and very hard water.And as for soft water it has to have less than a grain of calcium or magnesium. Hard water isn't as useful as soft water.
Forms of Calcium is what makes hard water hard