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Predict the geometries of the following species using the VSEPR method: (a) PCl3, (b) CHCl3, (c) SiH4, (d) TeCl4.
In the temperature range from 40 K to 90 K, a certain amount of liquid has a temperature dependent heat capacity that is given by Cp = 18.5 J K?1 + T × 0.24 J K?2. Determine the enthalpy change resulting from heating this sample from 58.0 K to 72...
given the pk for acetic acid is 4.76. suppose that we dissolve a mole of this weak acid in 10l of water. find the ph of
Write as a superposition of 3 eigenstates, indicating the numerical value of each coefficient. Using the coefficients, demonstrate that is normalized.
What is the pH of a solution that contains an initial concentration of 0.080 M citric acid and .010 M citrate ions (Ka = 7.4 x 10-4)
what is the composition of vapor of a pentane-hexane solution that has a vapor pressure of 373 torr at 25 degree celcius? Given is Pure Hexanes and pentanes vapor pressure at 25 degrees celcius. Pentane - 511 torr. Hexane -150 torr.
After you have made your observations, you can release the vacuum and allow the pressure inside to return to atmospheric pressure. Do this by removing the pumper and squeezing the rubber septum as indicated.
Zinc phosphate (Zn3(PO4)2) has a solubility product constant Ksp = 9.0 x 10^-33. What is the solubility of zinc phosphate in the following problems. answer them seperately... a) ...pure water? b) ...0.02 M ZnCl2? c) ...0.005 M Na3PO4
What is the total pressure in mmHg of the mixture after it is placed in a container 1/2 the volume of the original container?
If the Km of the above enzyme is 12 mM, calculate the substrate concentration needed to achieve 40% of maximal velocity. Then what fraction of active sites are filled at 40% maximal velocity
What is the molarity of a solution obtained when a mass of 23.6 g of calcium chloride is diluted to a volume of 250 mL in a volumetric flask? The molarity is ___x10^___ M.
How much heat is needed to raise the temp. of 25.0 g of gold from 23C to it's melting point at 1063C? I know the answer is 3.4 KJ but need to know how to get the answer if unknown.
how can you determine if they are the same without using any form of spectroscopy? explain the physical/chemical reasons why your proposed method would work
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