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An unknown compound of formula C10H12O has a strong absorbance in the IR spectrum at 1710cm-1. It's proton NMR spectrum displays 4 signals as follows: 1.0 ppm(triplet, 3H); 2.4 ppm (quartet, 2H); 3.7 ppm(singlet, 2H); 7.2 ppm (multiplet, 5H). Identify the structure of this compound.
When the protien is treated with cyanogen bromide, four peptides are obtained. When treated with trypsin, 15 peptides are obtained. What do these results suggest regarding the sequence of the protien? Please be as specific and detailed as possible..
The flask was then shaken until the solution was uniform. A 45.0- sample of this glucose solution was diluted to 0.500 . How many grams of glucose are in 100. of the final solution?
What is the pH of a solution of 0.050M formic acid(HCO2H, Ka=1.8*10^-4) and 0.035M sodium formate
The principal quantum number (n): A. specifies the principal shell of the orbital. B. specifies the subshell of the orbital. C. specifies the 3-D shape of the orbital
A buffer is made by mixing HCN and KCN to give a solution whose pH is 9.49. If the KCN molarity is 0.20 M, what is the molarity of the HCN?
Give the balanced total and net ionic equations and predict whether a reaction occurs. indicate whether the reactions are precipitation reactions or acid-base reactions.
If you combine equal volumes of the following solutions, which combinations will result in the desired buffer? Why are the answers are 0.20 M CH3CO2H + 0.10 M NaOH and 0.20 M Na(CH3CO2) + 0.10 M HCl
A titration required 18.38 mL of 0.1574 M NaOH solution. How many moles of NaOH were in this volume?
A sample of H2O with a mass of 46.0 grams has a temperature of -58.0C. How many joules of energy are necessary to melt 46.0 grams of ice.
Draw all of the stereoisomers that result when (E)-but-2-ene is hydrogenated with D2 over a metal catalyst. If more than one stereoisomer is produced, click the "New" tool on the toolbar after you input each structure so that you can input another..
dissolved in 100.0 mL water and titrated with 0.500 M NaOH; it takes 45.1 mL to reach the equivalence point. What is the molecular mass (g/mol) of pyruvic acid?
What weight of solid PbCl2 is formed when 225ml of a .2424M solution of sodium chloride is mixed with 225 ml of a .4242 M solution Pb(NO3)2
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