â€‹â€‹â€‹â€‹â€‹Explain the principle and construction of a hydrometer. What is the purpose of the common measurements of...

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Physics

â€‹â€‹â€‹â€‹â€‹Explain the principleand construction of a hydrometer. What is the purpose of the commonmeasurements of the specific gravities of an automobileâ€™s radiatorcoolant and battery electrolyte?

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A hydrometer is a tool scientists use to measure the specific gravity of liquids Specific gravity is the ratio of the mass of a liquid to the mass of an equal volume of pure water Because the density of a liquid changes with temperature hydrometers are calibrated for different reference and sample temperatures Classically specific gravity was measured using the density of water at 4C the temperature of maximum density for pure water Today most hydrometers used in water quality testing are calibrated for with a reference temperature of 60F See Answer

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