Energy transformations take place when batteries power a
flashlight
Which flowchart best repr...
Chemistry, 18.10.2020 01:01 GabbyGood1072
Energy transformations take place when batteries power a
flashlight
Which flowchart best represents how these transformations take place?
-
O A. Chemical (batteries) - electrical (electrical circuits)
electromagnetic (bulb)
O B. Electrical (batteries) - chemical (electrical circuits) -
electromagnetic (bulb)
electrical
C. Chemical (batteries) -- thermal (electrical circuits)
(bulb)
O D. Electrical (batteries) -- chemical (electrical circuits) - electrical
(bulb)
Answers: 2
Chemistry, 22.06.2019 14:30
Aroom with dimensions 7.00m×8.00m×2.50m is to be filled with pure oxygen at 22.0∘c and 1.00 atm. the molar mass of oxygen is 32.0 g/mol. how many moles noxygen of oxygen are required to fill the room? what is the mass moxygen of this oxygen?
Answers: 1
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Gusing the milligrams of ascorbic acid you entered above, the ratio of total sample volume to aliquot volume, and the total milligrams of the vitamin c tablet that you dissolved, calculate the mass of ascorbic acid in the vitamin c tablet for each trial. do this by scaling up to find the amount (mg) of ascorbic acid in your 250 ml flask. enter your calculated mass of ascorbic acid in the vitamin c tablet, for each trial. be sure to enter your calculated mass in the corresponding order that you entered your milligrams of ascorbic acid. the milligrams of ascorbic acid you entered for entry #1 previously should correspond to the mass of ascorbic acid that you enter for entry #1 here.
Answers: 1
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