US. National Chemistry Olympiad: 1995 Local Test W 1. Which gas could be collected over water? (A) ammonia (B) carbon dioxide (C) hydrogen chloride
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6. The percentage of water in a hydrated salt is to be determined by weighing a sample of the hydrate, heating it to drive off the water, and weighing the anhydrous product. Which procedural

error(s) could result in a percentage of water that is too low?
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Procedural Mistakes I. not heating the hydrate long enough II. weighing the anhydrous sample while it is still warm III. using a balance tht reads 0.12 g high for both weighings (A) I only (B) II only (C) I and II only (D) I and III only
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Uploaded by: ChancellorBraverySquirrel8295

Subject: Chemistry, Science

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