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Provide a detailed, stepwise mechanism for the base- mediated transesterification of methyl benzoate with sodium ethoxide
a sample of powder was found at a crime scene. it is believed that the powder is cocaine. the only four elements in the
How to calculate wavelength of light emitted when transition in hydrogen atom? How caclulate wavelength in nanometers?
What by-product would be obtained in high yield if the diazotization of p-toluidine were carried out at 30°C instead of 0 to 5°C
What is the density of a block of marble that occupies 350 cm3 and has a mass of 660 g?Answer in units of g/cm
If the volume of a gas container at 32.0°C changes from 1.55 L to 755 mL, what will the final temperature be
A solution is made by mixing 49.0 mL of ethanol, C2H6O, and 51.0 mL of water. Assuming ideal behavior, what is the vapor pressure of the solution at 20 degrees celcius
4.5 g CH4(g) occupies 12.7L at 310K. Calculate the work, heat, energy, and enthalphy change upon expansion by 3.3L @p=constant. please show the equations used.
what are the equilibrium concentrations of [H2C2O4],[HC2O4-1],[C2O4-2] and [H+] in a 0.200 M solution of oxalic acid (H2C2O4)
A 2.914-g sample of gypsum, a hydrated salt of calcium sulfate, CaSO4, is heated at a temperature greater than 170 Celsius in a crucible until a constant mass is reached.
A solution is prepared by mixing 50.0 mL of 0.29 M Pb(NO3)2 with 50.0 mL of 1.9 M KCl. Calculate the concentrations of Pb2+ and Cl at equilibrium. Ksp for PbCl2(s) is 1.6 x10-5.
In a half-life decay process, start with 4.00 mCi of material having a half life of 25 mins. Without any detailed calculations, approximately how many mCi of this isotope would be remaining after 2 hours and 10 mins
For the reaction 4NH3(g)+ 5 O2(g)= 4NO(g)+ 6H2O(l) a.) Use the following standard enthalpies of formation to calculate the enthalpy change. NH3(g)= -46.11 kJ/mol O2(g)= 0 kJ/mol NO(g)= 90.25 kJ/mol H2O(l)= -285.83 kJ
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