Chemistry, 09.01.2020 16:31 fchadwayne9185
Which of the following often causes market failure that is, causes markets to fail to estasblish fair prices and use resources efficiently or properly
a: surpluses
b: shortages
c: monopolies
d: competition
Answers: 3
Chemistry, 22.06.2019 02:10
When 225mg of anthracene, c14h10(s), was burned in a bomb calorimeter the temperature rose by 1.75k. calculate the calorimeter constant. by how much will the temperature rise when 125mg of phenol, c6h5oh(s), is burned in the calorimeter under the same conditions? (δch< (c14h10,s)=â7061 kj molâ1.)
Answers: 3
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 10:10
What shape would a molecule with two bound groups and two lone pairs have?
Answers: 1
Which of the following often causes market failure that is, causes markets to fail to estasblish fai...
Mathematics, 16.10.2019 04:00
Chemistry, 16.10.2019 04:00
Mathematics, 16.10.2019 04:00
History, 16.10.2019 04:00
Biology, 16.10.2019 04:00
History, 16.10.2019 04:00
Mathematics, 16.10.2019 04:00
English, 16.10.2019 04:00