Chemistry, 13.11.2019 08:31 nforrestall
1. why is it important to heat the baking dish or ramekin and cover in step #1?
2. why is it necessary to achieve constant mass? how will you know when constant mass is achieved?
3. why should the ramekin be cooled before taking a mass reading?
4. how might each of the following affect the reliability of your results? explain.
• increased humidity in the room.
• eliminating the preliminary heating, cooling, and massing of the ramekin and cover prior to its use.
(step 1)
• measure the mass of a clean, dry baking dish with the cover. record the mass of the empty, dry dish and cover in data table entry #1. place a clean, dry baking dish or ramekin with the cover ajar in the oven and heat for 10 minutes at 250◦f. discontinue heating and carefully use hot pads to remove the dish and cover onto a cooling rack for cooling. when cool enough to touch (about 5 minutes), measure the mass of the dish and cover. record the mass of the empty, dry dish and cover in data table entry #2.
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1. why is it important to heat the baking dish or ramekin and cover in step #1?
2. why is it...
2. why is it...
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