Chemistry, 21.01.2021 14:00 alisonlebron15
Three students are asked to discuss the sources of error that might have affected the outcome of the lab. Select the student that employs correct scientific reasoning. Student 1: If the spot was placed below the solvent level, this would cause the sample to be dissolved into the solvent pool before traveling up the plate. Student 2: If the solvent used has the opposite polarity of the stationary phase this will cause unequal movement of the sample. Student 3: If the developing chamber was closed too quickly than the sample wouldn't be able to travel on the TLC plate.
Answers: 3
Chemistry, 21.06.2019 17:30
The following reaction shows the products when sulfuric acid and aluminum hydroxide react. al(oh)3 + h2so4 → al2(so4)3 + h2o the table shows the calculated amounts of reactants and products when the reaction was conducted in a laboratory. initial mass and yield sulfuric acid aluminum hydroxide initial amount of reactant 40 g 15 g theoretical yield of water from reactant 14.69 g 10.38 g what is the approximate amount of the leftover reactant? 11.73 g of sulfuric acid 10.33 g of sulfuric acid 11.12 g of aluminum hydroxide 13.67 g of aluminum hydroxide
Answers: 1
Chemistry, 22.06.2019 07:00
At 450 mm hg a gas has a volume of 760 l, what is its volume at standard pressure
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Chemistry, 22.06.2019 13:00
Adepositional also feature that forms where a stream enters a lake or an ocean is a
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Three students are asked to discuss the sources of error that might have affected the outcome of the...
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