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.
Answers: 1
Chemistry, 22.06.2019 11:40, arlabbe0606
Effect of rotenone and antimycin a on electron transfer rotenone, a toxic natural product from plants, strongly inhibits nadh dehydrogenase of insect and fish mitochondria. antimycin a, a toxic antibiotic, strongly inhibits the oxidation of ubiquinol. (a) explain why rotenone ingestion is lethal to some insect and fish species. (b) explain why antimycin a is a poison. (c) given that rotenone and antimycin a are equally effective in blocking their respective sites in the electron-transfer chain, which would be a more potent poison? explain.
Answers: 3
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...