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How is vacuum filtration completing the purification of your sample? Where are the impurities at this point?
For a recrystallization lab in organic chemistry
The Ka of acetic acid is 1.8 x 10^-5. Calculate the pH of a solution that is composed of 1.0 M CH3CO2H and 0.50 M NaCH3CO2. Can someone please help
Compare the stuctures of molecular substances with those of giant molecular substance
Which of the following is the product of the addition of water to methyl isocyanate, CH3N=C=O? (there are four drawings) the differences between the answers is what is attached to the N and if its an alcohol or not.
Complete the following reaction and include All possible isomers of the product. One equivalent of each ligand is added to the reaction at the same time.
Which of the following nuclides have magic numbers of both protons and neutrons: (a) helium-4, (b) oxygen-18, (c) calcium-40, (d) zinc-66, (e) lead-208
Problem- Identify the following statements as true or false. (Utilize the drop-down menu moreover select "True" or "False" for each. You should get all 6 correct.) 1) If a process increases the randomness of the particles of a system the entropy of..
Why might a reaction time not double when a concentration is cut in half? Typically when a concentration is cut in half, the reaction time doubles.
calculate the delta H for the reaction:CH4(g) + 4Cl2(g) --> CCl4(g) + 4HCl(g). Use the following data: C(s) + 2H2(g) --> CH4(g) delta H = - 74.6 kJ; C(s) + 2Cl2(g) --> CCl4(g) delta H = - 95.7 kJ; H2(g) + Cl2(g) --> 2HCl (g) delta H = - 92.3 kJ
For a certain glass electrode, the selectivity coefficient for Na+ relative to H+ is 1.0E-12. The electrode is calibrated with NBS standard buffers 6.86 and 9.18,
what volume of a 0.400 mM solution of nickel (II) acetate (FW 247.7 g/mol) is required to provide 20mg of nickel
camphor was reduced by an excess of sodium borohydride to make 1.3 g of isoborneol. Calculate the theoretical yield and percent yield for this reaction.
As the lead refinery representative on the unified incident command (UIC), what actions should be taken by the UIC to respond to this incident (please consider all receptors).
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