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explain observation made when anhydrous calcium chloride and anhydrous copper 2 sulphate are separately exposed to the atmosphere for about 2 days
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Jan 24, 2022
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Chemistry Form 1
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Phillies
air and combustion
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explain the observation made when anhydrous calcium chloride is exposed to the atmosphere for about two days.
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Mar 28, 2022
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The diagrams below represent two iron nails with some parts covered tightly with zinc and tin respectively. What observations would be made at the exposed points R and Z if the wrapped nails are left in the open for several days? Explain.
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Jul 27, 2021
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rusting
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Some moist iron wool was placed in a test tube and the tube inverted and placed in a beaker containing water. The apparatus was left for one week .It was observed that the iron wool had rusted and the water level had raisen.No further change took place when the set-up was left for more days even though not all the iron rusted.
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Aug 4, 2021
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The curve below represents the variation of temperature with time when pure and impure samples of a solid were heated separately.
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Aug 5, 2021
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Chlorine water was exposed to sunlight for a few hours .Colourless gas F was collected in the boiling tube as shown.
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