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What is the empirical formula of a compound that contains 49.4% K, 20.3% S, and 30.3% O by mass?
A muon is an elementary particle with a negative charge equal to the charge of an electron and a mass approximately 200 times that of the mass of an electron.
Use the H NMR spectrum of the purified cyclic acetal to identify the major diastereomer From borohydride reduction. There are no minor diastereomers. Draw its structure including stereochemistry. Determine the ratio between major:minor.
determine the maximum number of coordination sites that the ligand can occupy on a single metal ion.
If a 484 mL sample of gas at 232 °C is allowed to expand (at constant pressure) to a volume of 494 mL, what will be the new temperature (in °C).
The lattice points in zinc chloride are occupied by molecules while the lattice points in zinc metal are occupied by atoms.
Diethylamine, (C2H5)2NH, is a weak base (pKb=3.16 at 25oC). What is the pH of 0.155 mol/L (C2H5)2NH(aq) at 25oC? Give your answer accurate to two decimal places.
Find the amount of known substance present in the mixture and determine the mass of calcium carbonate present in original mixture.
Show the full mechanism of bromination for both 2,4-nitrophenol
Calculate the steric strain for the most stable chair conformer and for a less stable conformer for the following: a) trans-1-ethyl-3-fluorocyclohexane
How many milliliters of 5.00 M HCl solution are needed to provide the 1.50 moles of HCl needed for a reaction?
A solution of 0.312 M KOH is used to neutralize 20.0 mL H3PO4 solution. H3PO4(aq)+3KOH(aq)---------->K3PO4(aq)+3H2O(l) If 30.3 mL KOH solution is required to reach the end point, what is the molarity of the H3PO4 solution
They have a polar end b. The have a hydrophobic end c. The are often sodium slats of long chain fatty acids. d. The hydrophilic end of the soap molecules is attracted by grease. e. they precipitate in water that contains Fe3+ ions
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