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Place the subsequent elements in order of decreasing atomic size largest to smallest: lead, phosphorus, oxygen, cesium, barium, and silicon
How many seconds will be required to deposit 6.00 g of Cr from a solution that contains Cr 3+ ions if a current of 0.75 A is used
Gas chromatography. Answer the following questions about retention times of the following compounds. Given naphthalene (boiling point = 218 degrees C)
Ethanol melts at -114 C and boils at 78 C. The enthalpy of fusion of ethanol is 5.02 kJ/mol, and its enthalpy of vaporization is 38.56 kJ/mol. The specific heats of solid and liquid ethanol are 0.97 J/g.K and 2.3 J/g.K, respectively.
Why is GC a poor choice for analyzing large molecular weight materials. Specifically identify these limitations. For all practical purposes what is our upper limit in GC
Calculate the lattice energy of Na2O for the following data: Ionization energy of Na(g):::495kj/mol, Electron affenity of O(g) for 2e-:::603 kj/mol
1.7g of 2,3-dimethyl-1,3-butadiene is refluxed with 1.7g of maleic anhydride in toluene, and 1g of product is recrystallized from hexanes. The product has the formula C10H12O3. Calculate the percent yield.
methyl orange is an acid-base indicator. in dilute solution at ph greater than 4.4 it is yellow. at ph 3.2 the
Outline a complete mechanistic sequence for the reaction of 2-bromobutane with potasium2-methyl-2-propoxide in 2-methyl-2-propanol solvent to form thethree alkenes generated in the reaction
2,3-dimethyl-2,3-butanediol upon heating in aqueous acid, rearranges to form 3,3-dimethyl-2-butanone. Suggest a mechanism for this
Calculate the wavelength of the n=4 to n=1 and the n=4 to n=3 transitions. Indicate in which regions of the electromagnetic spectrum these transitions would occur.
question the standard reaction gibbs energy of the decomposition of caco3 to cao and co2 at 1173 k is 0.178 kj mol-1.
How many grams of aspirin were lost in the washing process you used to purify your product, assume you used 50 ml of water for washing. The solubility of aspirin in water is 0.33 g per 100 ml at room temp. actual yeild=2.582 g theoretical yield= 2..
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