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The following data were getting from experiments to find the molecular formula of procaine, a local anesthetic, which contains only carbon, hydrogen, nitrogen, and oxygen. Entire combustion of a 3.54g sample of procaine with excess O2 formed 8.58 g of CO2 as well as 2.70 g H2O. Another sample of mass 2.35 g was originate to contain 0.279 g of N. Explain the molar mass of procaine was found to be 236.
Determine the molar formula of procaine.
A solution is prepared by diluting 0.0342 mol acetic acid with water to a volume of 8.39 L. What is the pH of the solution
One function of iron-sulfur clusters and heme cofactors is to participate in electron transfer reactions. Describe how nature obtains a large variation in reduction potentials using these cofactors when the iron atoms can only change between the F..
Calculate the work done (in Joules) when 1 mole of ideal gas at 2 bar pressure and 300 K is expanded isothermally to a pressure of 1.5 bar, with the external pressure held constant at 1.5 bar.
Calculate the heat of enthalpy for the reaction: PCl5(g) → PCl3(g) + Cl2(g)
Given the following half-cell reactions, write the overall reaction and calculate the standard reduction potential for the cell. Mn3O4 (s) + 4H2O (l) + 2e- ? 3Mn(OH)2 (s) + 2OH- (aq)Eo = 0.002 V
Calculate the pressure of a helium sample at -207.3°C and 768 mL if it exerts a pressure of 175 kPa at 25.0°C and 925 mL
After the reaction, the mass of the beaker, water, and the remains of the tablet weighs 87.42 g. What was the mass of the liberated carbon dioxide gas
Using A sample having X amount of oxalic acid. If 0.5187 grams of the sample requires 40.20 mL of 0.1000 M Sodium hydroxide to neutralize the oxalic acid completely.
Oxygen is prepared by heating potassium chlorate with manganese dioxide as a catalyst. 2KClO(*3*)(S)?2KCl(S)+30(*2*)(g) How many grams of oxygen would be obtained from 1.500g of potassium chlorate
A mixture containing 8ml cyclohexane, 8 ml p-xylene, and 8 ml dichoromethane was distilled. how to caculate the mole percent composition of p-xylene
In this exercise it was also assumed that the calorimeter was a perfect insulator and that no heat was lost to the surroundings.
Describe how you would purify p-nitrobenzoic acid from a mixture of a 9.0 g of p-nitrobenzoic acid and 2.0 g of o-nitrobenzoic acid using recrystallization.
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