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Two samples of pure water of equal volume are put into separate dishes and kept at room temperature for several days. What can you conclude about the two dishes? The water in the first dish is completely vaporized after 2.8 days, while the second dish takes 8.3 days to completely evaporate.
Compute Ksp for the following salts (KIO4, La(IO3)3, and Ba3(PO4)2) in an aqueous solution at 25°C in which = 0.0100. Utilize the table of Ksp values below as well as a table of activity coefficients to solve this problem.
Between 0 degrees Celsius and and 30 degrees Celsius, mercury has a specific heat of 0.138 J/g*C. If 200 J of heat are removed from 100 g of Hg at 20 degrees Celsius, what will the final temperature of the Hg be
What is the activation energy for a reaction if its rate constant is found to triple when the temperature is raised from 300 k to 310 k.
how many grams of water can be cooled from 33 to 20 by the evaporation of 37 of water? the heat of vaporization of
calculate the concentration of calcium ion (in mg/L -1) in the water (25C). What assumptions are made in carrying out the calculation?
What are the probable classes of hydrocarbon or hydrocarbon derivative (i.e.: alkane, alkene. ketone. ester. organic halide, etc...) in each of the following
A certain constant-pressure reaction is nonspontaneous at 45oC. The entropy change for the reaction is +72 J/K. What can you conclude about the sign and magnitude of the enthalpy
Write the structural formula of the main organic product for the following reaction between an alcohol, tosyl chloride, and then a nucleophile.
Calculate the volume in milliliters of a 0.30 M acetic acid solution that contains 0.0142 mol HC2H3O2.
Give the coordination number of the central ion in each of the following complexions. a. Zn(OH)42-
Consider the molecular orbitals of the P2 molecule. Assume that the MOs of diatomics from the third row of the periodic table are analogous to those from the second row. Which valence atomic orbitals of P are used to construct the MOs of P2?
Write both an equation using Lewis structures and a balanced chemical equation for the following reactions. Silicon atoms and chlorine molecules.
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