Chemistry, 01.07.2019 19:00 DnsMonsteR3462
Which substance has vibrating particles in regular, fixed positions
Answers: 1
Chemistry, 21.06.2019 14:00
The study of witch tree monkeys feed in is part of the science life
Answers: 1
Chemistry, 21.06.2019 23:00
Matches the chemical name of each oxide of phosphorus to its chemical formula
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 09:20
Give the orbital configuration of the phosphorus (p) atom.
Answers: 1
Which substance has vibrating particles in regular, fixed positions...
Mathematics, 05.05.2020 05:14
English, 05.05.2020 05:14
Mathematics, 05.05.2020 05:14