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Explain Hardness - Water Softening
1) Hardness is used to characterize a water that does not lather well, causes a scum in the bath tub and leaves hard, white, crusty deposits when water is heated
2) Calcium or magnesium forms soap- Ca or Mg complex and prevents soap from interacting with dirt
3) Hardness- caused mainly by Calcium and Magnesium(actually all polyvalent ions)
4) Common units are meq/l or mg/l as CaCO3
Define Underwater Inspection of steel or cast iron structures? Underwater Inspection of steel/cast iron structures may be carried out as under: i. Start the inspection at sp
The specific gravity of ferric chloride solution equals 1.3. How much does one gallon of ferric chloride weigh? Solution: ρ ferric chloride /ρ water = 1.3 Conver
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when i have solved the given assignment work then how will you pay me for that work??
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the two sides of a triangle are 17cm and 28 cm long, and the length of the median drawn to the third side is equal to 19.5. find the distance from an endpoint of this median to the
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