mpt.php?attempt 7950988page 2 SCI 117 Meta SCl 117 SCI 117 QUIZZES -LAB QUIZ: Wa
ID: 1037470 • Letter: M
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mpt.php?attempt 7950988page 2 SCI 117 Meta SCl 117 SCI 117 QUIZZES -LAB QUIZ: Water Hardness (APR 2-APR 9) A major economic effect of hard water is which of the following? answered out of 1 question Select one: a, increased energy costs due to insulating effect of boiler scale o b. decrease in savings due to replacing worn clothing C. lost man-hdyrs due to scratchy skin d. lost modeling contracts due to fly-away, static-y hair e. costs associated with frequent replacement of home plumbing eg, diverter valves vious page 2017 Indiana University of Pennsylvania 1011 South Drive Indiana PA 157051 724-357-2100 You are logged in as Justin Jones (Log oExplanation / Answer
Hard water contains mainly Ca2+and Mg2+ ions as its bicarbonates, chlorides, and sulfates.
If hard water is used in boilers, the calcium and magnesium ions in hard waters form a hard scaling of its salts on the plates. Heat conductivity of the scale is very poor and as a result, fuel consumption is increased, and the boiler deteriorates rapidly due to external overheating of the plates.
Hence, Its major ecconomic effect is the increased cost of energy due to insulating effect of boiler scale
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