Chemistry, 09.11.2021 19:20 daplol22222
What is the reaction between zinc nitrate and magnesium ribbon immediately,30 minutes and 24 hours?
what is the reaction between magnesium nitrate and zinc strip immediately,30 minutes and 24 hours?
what is the reaction between magnesium nitrate and copper strips immediately, 30 minutes and 24 hours?
what is the reaction between copper nitrate and magnesium ribbon immediately, 30 minutes and 24 hours?
what is the reaction between copper nitrate and zinc strip immediately, 30 minutes and 24 hours?
what is the reaction between zinc nitrate and copper strip immediately, 30 minutes and 24 hours?
Answers: 3
Chemistry, 22.06.2019 05:00
Given sno2 + 2h2 - sn + 2h20 tin oxide reacts with hydrogen to produce tin and water. how many moles of sno2 are needed to produce 500.0 grams of sn?
Answers: 3
Chemistry, 22.06.2019 07:30
Calculate the ratio of h+ ions to ohâ ions at a ph = 7. find the concentration of h+ ions to ohâ ions listed in table b of your student guide. then divide the h+ concentration by the ohâ concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to ohâ ions at a ph = 7. are they the same? why or why not? record your comparison in table a. what is the concentration of h+ ions at a ph = 7? mol/l what is the concentration of ohâ ions at a ph = 7? mol/l what is the ratio of h+ ions to ohâ ions at a ph = 7? : 1
Answers: 1
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 19:30
Which one of the following substances would be the most soluble in ccl4? na2so4 h2o ch3ch2ch2ch2oh c4h10 hi
Answers: 1
What is the reaction between zinc nitrate and magnesium ribbon immediately,30 minutes and 24 hours?...
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