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Presume that the initial volume of the HA solution equals the volume of water utilized to dissolve you solid acid HA a) using the value of ka from your titration curve, Compute the pH at the equivalence point
If the initial concentration of N2O4 is 0.50 M, and no NO2 is initially present, what is the equilibrium concentration of N2O4? Kc = 0.0059 at 298 K N2O4 (g) 2NO2 (g)
The standard molar enthalpy of vaporization for water is 40.79 kJ/mol. What mass of steam is required to release 500. kJ of energy upon condensation? (Molar mass of water is 18.02 g/mol.)
I take 250.0 mL of 0.250 M sugar and mix it with 500.0 mL of 0.100 M NaCl. What is the concentration of sugar in the mixture. What is the concentration of NaCl in the mixture
The energy needed to dislodge electrons from sodium metal via the photoelectric effect is 275k/mol. Explain what wavelength in nm of light has sufficient energy per photon to dislodge and electron from the surface of sodium
Do synthesized 4-methylcyclohexane in an experiment. Get a good IR, very alike to the "real" one. Require interpreting the presence and absence of peaks. There is a small peak at 1350cm-1, larger peak at 1450cm-1, and small peak at 1650 cm-1, broa..
What is also produced when aluminium-27 is bombarded with deuterium to give aluminium-28? a. neutron b. proton c. positron d. electron
If the vapor pressure of ethyl ether and ethyl alcohol at 20°C are 375 torr and 20.0 torr, respectively, the vapor pressure of the solution at 20°C
NO2 then interacts withUV light according to the following reaction. Classify this reaction as a synthesis, decomposition, single-displacement, or double-displacement reaction.
In 2.00 min, 29.8ml of He effuse through a small hole. Under the same conditions of pressure and temperature, 9.85ml of a mixture of CO and CO2 effuse through the hole in the same amount of time. Calculate the percent composition by volume of the ..
when a antacid tablet dissolves in water the fizz is due to a reaction between sodium hydrogen carbonate nahco3 also
The beaker will fill up to the 1.00 \rm L mark with the solution. Arrange the acids in increasing order of acidity.
At high temperatures phosgene (COCl2) decomposes to give carbon monoxide CO and Cl2. In a typical experiment, 0.631 g of COCl2 is injected into a flask of volume 472 cc. When equilibrium is established, it is found that the total pressure is 2.175..
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