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Why is it important to know amount of water in a petroleum product? (i.e. the free water and the dissolved and emulsified water) Why is important to know the amount of water and the amount of sedime
What is the major product formed when 1-bromo-2-methyl cyclohexane under goes elimination reaction when treated with sodium methoxide?
To reduce the solubility of benzoic acid in water to get it better portioned into diethyl ether, would it be better to add potassium carbonate or sodium chloride? Why?
What is Degradation? and what are some ways it is prevented? I did a cell fractioning experiment and I have to explain degradation and ways to prevent it?
A flask containing 5.oo mL of 3 M HCl solution requires 14.45 mL of1.00 M NaOH for titration. How many moles of HCL are present in the solution? The density of 3 M HCl is 1.05 g/mL.
How can you calculate an empirical formula if you are given the percent of each element present but not the molar mass?
What compound would be formed if two molecules of salicylic acid under went esterification? Why is this not a major side reaction in the synthesis of methyl salicylate?
A 10.00 mL sample of H2SO4 is titrated with a 0.25M NaOH solution. Exactly 40.0 mL of NaOH is required to reach the end point. Calculate the molar concentration of the sulfuric acid. H2SO4
Which spectroscopy technique is more useful, IR spectroscopy or UV-vis spectroscopy. What does does each one tells us?
200.0 L of a 0.200 M copper (II) chloride solution is reacted with 10.0 L of 3.00 M phosphoric acid and 2.850 kg of solid copper phosphate is produced.
Did something go wrong in the experiment? If the extracted unknown is impure, why does it's melting point have a narrow range?
The rate constant, k for a given reaction was determine at a number of temperatures. aa graph of log k versus the reciprocal of the kelvin temperature yielded a straight line with a slope of -250k.
A can of coke contains 39.0g of sugar. How much gasoline would contain an equivalent number of calories ? Explain in detail.
An aspiring biochemist needs some help. He is a new technician and is learning about protein separation techniques. He has purchased some ferritin.
A certain sample of brine has 3.87% NaCl by mass. A 75.0 mL sample weighs 76.9 g. How many litres of this solution should be evaporated to dryness to obtain 725 kg NaCl?
A 0.521 M potassium hydroxide solution is titrated to the equivalence point by 15.27 mL of a 1.240 M phophoric acid solution.Q. what volume(in mL) of potassium hydroxide was titrated?
0.800 moles of an unknown mono basic weak base are added to1.70 L of water. The resulting solution has a pH of 9.500. What is the Ka of the conjugate acid of the unknown base? Assume no change i
How many grams of NaCN would you need to dissolve in enough water to make exactly 425 mL of solution with apH of 10.00?
Which of the following metals would result in the greatest final temperature if 63.9 grams of each are heated to the same initial temperature and added to 51.1 mL of 29.0°C water?
What is the enthalpy change for the reaction per mole of CsOH? Assume the density of the solutions are 1.00g/mland the specific heat capacities of the solutions are 4.2 J/g. K.
Explain why the sample in an IR spectrophotometer is place dimmediately after the source of radiation and in UV-Vis is place dafter the monochromator.
What makes vibrational spectroscopy (DRIFTS/RAMAN) a better characterization tool than other spectroscopic techniques such as UV-Vis and fluore scence?
How would you calculate concentrations of H30 and OH? thought it was simply 10^(-pH) but I am getting a more specific number than that as the apparent answer.
What is the major product formed when 1-bromo-2-methyl cyclohexane undergoes elimination reaction when treated with sodium methoxide?
Explain why sodium hydroxide volumes needed to titrate the dilute nitric acid andglycolic acid are basically the same, or why they are verydifferent. Shouldn't the stronger nitric acid require more