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Give the structure that corresponds to the following molecular formula and 1H NMR spectrum: C4H10O2: ? 1.36 (3H, d, J = 5.5 Hz); ? 3.32 (6H, s); ? 4.63 (1H, q, J = 5.5 Hz)
Write a balance chemical reaction showing that Ru2+ disproportionates in aqueous acid. calculate standard potential and the Gibbs Free Energy for the reaction.
Explain which of the following aqueous solutions has the strongest ion-dipole attractions:0.3 M Na3PO4, 0.1 M NiF2,0.2 M Rb2CO3, 0.01 M Sr(OH)2 , 0.03 M ScBr3.
Use the appendices in your textbook to estimate the normal boiling point of water at 1 atm. Compare the temperature obtained with the known boiling point of water. Can you explain the discrepancy. At what temperature does water boil
A student added 27.20 cm^3 of 0.200 mol dm^-3 HCL to 0.188 g of eggshell. Calculate the amount, in mol, of HCL added. what is it?
A star is estimated to have a mass of 1x10^36 kg. Assuming it to be a sphere of average radius 7.5x10^5 km, calculate the average density of the star in units of grams per cubic centimeter.
What is the relative kinetic energy between the electron and proton after ionization, that is r=infinity? C) Assume that the electron has all the kinetic energy in part
What is the freezing point of a solution of 224 g of ethylene glycol (C2H6O2) dissolved in 1000 g of water?
What is the pH in which 10.0mL of 0.010 mol/L Sr(OH)2 are added to 10.0mL of 0.010mol/L HCl?
Sam was standardizing her 4mL iron solution (50 ppm concentration) , but did not exactly add 4.0 mL. Instead he added 4.50mL.
What is the pH halfway to the equivalence point for the titration of 0.20 M CH3NH2 with 0.20 M HCl? (Kb of CH3NH2 = 4.4 x 10-4)
Calculate the energy of the frequency at which they are broadcasting. (In kilojoules)
Calculate E cell for the following balanced redox reaction O2(g)+2H2O(l)+4Ag(s)=4OH^-(aq)+4Ag^+(aq)
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