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Calculate the pH of a system composed of 0.135 M HC7H5)2, benzoic acid and 0.176 M KC7H5O2, potassium benzoate.
A mixture of Ar and N2 gases has a density of 1.592 g/L at STP. What is the mole fraction of each gas?
Write a suitable mechanism for the cleavage of butyl isopropyl ether with HI at 100 degrees C to form exclusively isopropyl alcohol and 1-iodobutane. Explain why butyl alcohol and 2-iodo-isopropane are not formed in this reaction.
When a sample of 5.00-g rams of Potassium thiocyanate is dissolved in H2O in a calorimeter that has a total heat capacity =6.225 kJ•K-1, the temperature decreases by 0.200 Kelvin. compute the molar heat of solution of Potassium thiocyanate.
Calculate the mass of Cu(NO3)2·3H2O needed to prepare 50.0mL of a 0.50 M Cu(II) solution?
What is the composition in mole fractions of a solution of benzene and toluene that has a vapor pressure of 35 torr at 20 °C? Assume the mixture forms an ideal solution.
how much energy would be required to raise the temperature of 75.0 g of water from 25 c to 75 c
When 64.5 g of HCl are allowed to react with 17.6 g of O2, 50.4 g of Cl2 are collected. Determine the limiting reactant, theoretical yield of Cl2 and percent yield for the reaction.
Find out how much energy is needed to raise the temperature of 22.8 g of diethyl ether from -10.0 degree celsius to 142.0 degree celsius?
The rate of effusion of a particular gas was measured and found to be 24.0 mL/min. Under the same conditions, the rate of effusion of pure methane (CH4) gas is 47.4 mL/min. What is the molar mass of the unknown gas?
What mass of H2O is required to form 1.3L of O2 at a temperature of 320K and a pressure of 0.957atm.
The following gas phase reaction is second order. 2C2H4(g)--->C4H8(g) Its half life is 1.51 min when [C2H4] is 0.250 M. a.What is k for the reaction?
What volumes of .200 M HCOOH and 2.00 M NaOH would make 300 mL of a buffer with the pH of one made from 475 mL of .200 M benzoic acid and 25 mL of 2.00 M NaOH?
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