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You are given a mixture of benzoic acid and sand. Write a short procedure to recover pure benzoic acid.
Pyruvic acid, HC3H3O3, is involved in cell metabolism. It can be assayed for (that is, the amount of it determined) by using a yeast enzyme. The enzyme makes the following reaction go to completion.
A solid hydrate weighing 2.691g was heated to drive off the water. A solid anhydrous residue remained, which weighed 2.259g. If the anhydrous residue has a formula weight of 282, How much moles of water are present in one mole of anhydrous salts
Write electron pushing mechanism of Friedel-crafts acylatoin of anisole with acetic anhydride as acylating reagent and aluminum chloride and CH2Cl2
the vapor of a volatile liquid is able to fill a 408-mL flask at 100.4C and 765mm Hg, what is the molar mass of the liquid?
Calculate the concentration of Hg2+, HgCl+, and HgCl2 that result when 1.00 L of a 0.100M Hg(NO3)2 solution is mixed with an equal volume of 0.100M HgCl2 solution.
Calculate the energy required to heat 1.30 kg of ethane gas (C2H6) from 27.0°C to 78.0°C first under conditions of constant volume and then at a constant pressure of 2.00 atm. Calculate ?E, ?H, and w for these processes
A 9.1 g sample of C6H5NH3Cl is dissolved in water to make 346 mL of solution. Determine the percentage deprotonation of the cation.
how is the rate of consumption of O2 related to the rate of consumption of NH3 in the reaction 4NH3 + 5O2 -->4NO +6H2O?
A reaction is performed in which 50.0 ml of 0.400 M silver nitrate and 75.0 ml of 0.100 M hydrochloric acid are mixed together. The initial temperature of the solution was 25.0oC
Derive an equation for the temperature dependenc of the vapor pressure of a liquid (analogous to the integrated form of the Clausius. Clapeyron equation) assuming that the vapor has the equation of state PV=RT+M where M is a constant.
Determine the enthalpy change per mole for dissolution of ammonium nitrate in water if 1.25 of the salt is dissolved in 25 g of water and the temperature changes for 25.8 degree C to 21.9 degree C.
Calculate the pH of the solutions formed by dissolving 1.0g of each of the following substances in 500mL of solution
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