Determine how many grams of ki are required to produce 1.2g of pbl2-
a) 0.43g
b) 0...
Answers: 2
Chemistry, 22.06.2019 05:40, yah2muchh
Calculate: select the worksheet tab. this tab you calculate the analyte concentration. ļ· fill in the first set of boxes ("moles h2so4" and "moles naoh") based on the coefficients in the balanced equation. (if there is no coefficient, the value is 1.) ļ· record the appropriate volumes in the "ml naoh" and "ml h2so4" boxes. ļ· record the concentration of the titrant in the m naoh box. click calculate. what is the concentration listed
Answers: 2
Chemistry, 22.06.2019 08:00, katelyn0579
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?
Answers: 1
Chemistry, 22.06.2019 19:00, andrecoral105
A4.86 g piece of metal was placed in a graduated cylinder containing 15.5 ml of water. the water level rose to 17.3 ml. what is the density of the metal. i need the steps of how to solve it to so i can use a formula to work out other problems.
Answers: 1
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