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You titrate 25.00 ml of a solution of HCl with a standardized solution of NaOH that has a molar concentration of 0.128 M. explain the titration requires 32.75 ml of the standardized NaOH solution to reach the endpoint. Explain what is the molar concentration of the hydrochloric acid solution?
Which MO is the HOMO and which is the LUMO in the excited state 5. How many nodes does the highest-energy molecular orbital of 1,3,5,7-octatetraene have between the nuclei
An open-end manometer containing mercury was connected to a vessel holding a gas at a pressure of 840 torr. The atmospheric pressure was 610 torr. What is the difference in the heights of the mercury, expressed in cm
Find the molarity of a solution prepared by dissolving 120 g CaCl2 (MW = 111 g/mol) in 450 cm3 of solution.
In the combustion of propane for energy, how many kilojoules of heat are produced when 2 kilograms of propane are completely combusted in the presence of excess oxygen
The products of our reaction (1- and 2-heptene) can form peroxides upon standing in air for a prolonged period of time
What is the Kc for the following equilibrium CO2+H2=CO+H2O if CO=0.24M, H2O=0.38m, CO2=0.30M and H2O=3.3*10-2M
Nitric acid is usually purchased in a concentrated form that is 70.3% HNO3 by mass and has a density of 1.41 g/ml. How much concentrated solution would you take to prepare 1.05 L of 0.100 M HNO3 by mixing with water
What is the molar enthalpy of the reaction. Based on the enthalpies of formation and of the other components in the reaction, what is the enthalpy of formation of sodium hypochlorite
If 5.78 mol of ethane (C2H6) undergo combustion according to the unbalanced equation C2H6 + O2 = CO2 + H2O how much oxygen is required?
Explain a compound decomposes by a first-order reaction. Explain the concentration of compound decreases from 0.1006M to 0.0810 M in 5.2min. Explain what fraction of the compound remains after 7.0 min
orbitals in the HCl molecule, taking ?= -1.0 eV and the ionization of energy of atomic chlorine as 13.1 eV.
Write a nuclear equation to describe the spontaneous fission of 244 Am 95 to form I-134 and Mo-107. Determine how many netrons are produced in the reaction
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