Chemistry, 18.07.2019 22:00 penelopymorales24
We kept adding pbi2 into water until no more will dissolve. what is the concentration of lead (ii) iodide in the solution
Answers: 1
Chemistry, 21.06.2019 20:30
The speed of light is around 6.706Ć10^8 miles per hour. what is the speed of light in units of miles per minute?
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Chemistry, 22.06.2019 06:30
How many moles of carbon dioxide will form if 2.5 moles of c3h8 is burned
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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 itās still hot? separation: filtration of precipitatewhy donāt 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 doesnāt 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 āsyntheticā salicylic acid is 151-154oc?
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Chemistry, 22.06.2019 12:00
Ineed this asap part i: scientific method what is the difference between science and pseudoscience? what is the scientific method?
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We kept adding pbi2 into water until no more will dissolve. what is the concentration of lead (ii) i...
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