Some human body cells are shown in the diagrams below. This group of cells represent
different...
Chemistry, 03.12.2021 01:30 lindseyr190
Some human body cells are shown in the diagrams below. This group of cells represent
different
Answers: 3
Chemistry, 21.06.2019 15:30
Becquerel expected to find ( he developed the photographic plate that had sun-exposed minerals on top of it. becquerel expected to find ( he developed the photographic plate that had been in the closed drawer.
Answers: 2
Chemistry, 22.06.2019 08:00
Straightforward questions answered in the powerpoint slidesreaction: heating the starting materials under refluxwhat does it mean to heat under reflux? why do we choose water as the reflux solvent? what are boiling chips used for? why do we put a condenser on top of the reaction? why do we add heat and let the reaction stir for 30 minutes? why do we add sulfuric acid to the reaction after it cools as opposed to when itâs still hot? separation: filtration of precipitatewhy donât we do an aqueous and organic extraction in the separatory funnel? why do you rinse the salicylic acid on the filter with ice cold water? purification: recrystallization of salicylic acid (no hot filtration needed)what is the difference in the amount of room temperature water vs. boiling water needed to dissolve the salicylic acid (assume a 1.2 gram yield of salicylic acid)? remember, in the lab if you need x ml of boiling water to dissolve a solid, then you should add a little more (definitely no more than 1.5 times the theoretical amount) to ensure it doesnât recrystallize prematurely.analysis: melting point of salicylic acidwhat can you conclude if the melting point of the salicylic acid you just synthesized is 152-155oc and the 1: 1 mix of your product and âsyntheticâ salicylic acid is 151-154oc?
Answers: 1
Chemistry, 22.06.2019 08:30
Which part of earthâs surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains
Answers: 2
Mathematics, 10.12.2020 08:50
Mathematics, 10.12.2020 08:50
Mathematics, 10.12.2020 08:50
Mathematics, 10.12.2020 08:50
Advanced Placement (AP), 10.12.2020 08:50
Mathematics, 10.12.2020 08:50
Mathematics, 10.12.2020 08:50
Mathematics, 10.12.2020 08:50
Mathematics, 10.12.2020 08:50
English, 10.12.2020 08:50