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Explain the attraction of a positive end of one molecule for the negative end of another neighboring molecule is a?
Which of the following substances are largely ionic, and which are covalent. (a) HF (b) HI (C) PbCl2 (d) BBr3 (e) NaOH (f) CH3Li
What volume of 4.7 M NaOH is required to react completely with 1.7 mL of a 1.51 M HCl solution?
Assuming that the drug components whose spots you identified dissolved completely when you stirred the tablet with 1:1 ethanol/dichloromethane, what was the solid that remained behind?
Consider a sample of 3.5g of water, which has an equilibrium vapor pressure of 23.8mmHg at 25.0 degC. IF this sample is placed into a 6.00L flask, what mass of liquid water will remain when equilibrium is established
A 26.0 mL aliquot of a flouride sample solution was diluted to 50 mL in a volumetric flask. The F- concentration of this DILUTED sample was determined with a F- ion selective electrode and found to be 3.1 mg/L. What is the concentration of F- in t..
A 100 ml sample of 0.10 M Ca(OH)2 is titrated with 0.10 M HBr. Determine the pH the solution after the addition of 300.0 ml HBr
Propylene glycol is a non-volatile di-alcohool that is used for de-icing of aircrafts on the ground. What is the minimal volume of propylene glycol that will be required per square meter of aircraft surface to remove a 3mm ice sheet if the tempera..
Which one of the following compounds is the most acidic? Why? A. 1-Phenylethanol B. 2-Phenylethanol C. o-Ethylphenol D. Ethyl phenyl ether E. Nitrobenzene
A baseball weighs 220 g. Top speed for a professional pitcher is about 100 mph when he throws a fast ball. Find the de Broglie wavelength (in nm) associated
The following data were collected for the reaction of tbutylbromide (CH3)3CBr) with hydroxide ion at 55 degrees Celsius: equation:
The Ka of lactic acid, HC3H5O3, is 1.410?4. (a) Suppose buffer #1 is prepared using 40.0 mL 0.1 M HC3H5O3 and 60.0 mL 0.1 M C3H5O3- to give a final volume of 100.0 mL. What is the pH of this buffer
In an organic chemistry lab, why would you not simply oxidize p-toluidine with KMnO4 to make p-aminobenzoic acid if it would be a faster method than using multi-step organic synthesis
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