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Author Question: Choose the INCORRECT statement. (Read 13 times)

khang

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on: Jul 8, 2021

Question 1

Choose the INCORRECT statement.
◦ Gypsum is CaSO4∙ 2H2O.
◦ Plaster of Paris is calcium sulfate hexahydrate.
◦ Quicklime is calcium oxide.
◦ Slaked lime is calcium hydroxide.
◦ Mortar used in bricklaying is made of slaked lime, sand, and water.

Question 2

Choose the INCORRECT statement.
◦ Temporary hard water contains the bicarbonate ion.
◦ Permanent hard water also contains anions other than bicarbonate.
◦ Ion exchange is accomplished by mixing chemicals in the water to precipitate hard water ions.
◦ Deionized water is water with ions removed by ion exchange.
◦ Boiler scale is a mixed precipitate of CaCO3, MgCO3, and rust.
General Chemistry: Principles and Modern Applications ¦ Petrucci, Herring, Madura, Bissonnette ¦ 11th Edition
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Marked as best answer by khang on Jul 8, 2021

allisonblackmore

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Reply #1 on: Jul 8, 2021
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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khang

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Reply 2 on: Jul 8, 2021
Wow, this really help

peter

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Reply 3 on: Yesterday
Gracias!

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