14. Measure and record the mass of a clean, dry watch glass. Transfer the copper

Question

14. Measure and record the mass of a clean, dry watch glass. Transfer the copper to the watch glass. Make sure that you have scraped all of the copper onto the watch glass. Dry the watch glass of copper under a heat lamp or in a drying oven for five minutes. When the watch glass is cool enough to touch, measure the mass of the watch glass plus cop Repeat the drying and weighing of the copper until you are sure that it is completely dry 15. 16. Dispose of the copper, aluminum wire, and filtered liquid as directed. DATA TABLE 4.60o Mass of crucible (9) Mass of crucble and hydrated sample (9) Mass of hydrated sample (g) Mass of crucible and dehydrated sample (g) Mass of dehydrated sample (g) Mass of water evolved (g) Mass of empty watch glass (g) Mass of watch glass and copper (9) Mass of copper (g) 4. 83G9 225 2259 55.873 55 ,9539 53

Explanation / Answer

Except the following, rest are correct entries.

Massof hydrated sample= 14.903-14.600=0.303g

Mass of dehydrated sample= 14.830-14.600=0.230g

Mass of water evolved= mass of hydrated sample - mass of dehydrated sample= 0.303-0.230= 0.073g

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