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The subsequent reaction has a Kc = 1.20 x 10-6 at 300 K. If the initial concentrations of Ao = 0.200 M and Bo = 0.100 M, Define what is the equilibrium concentration of C? A+B -><- 2C
diethyl ether has a vapor pressure of 400.0 torr at 18degc. when a sample of benzoic acid is dissolved in ether the
the gas buret before the hydrogen gas is genterated and is not removed, will the reported percent aluminum in the sample be too high or too low?
in general most substances melt at a higher temperature as pressure is increased except water. justify this behavior
Calculate the effective radiation dosage (in Sieverts) for a 85-kg person who is exposed to 7.3 × 109 particles of alpha radiation. Assume that 85% of the radiation is absorbed,
attach a copy of the graph of the average class data for mass of barium sulfate versus volume of barium chloride. what
12.0 moles of gas are in a 3.00L tank at 22.7C. Calculate the difference in pressure between methane and an ideal gas under these conditions. The van der Waals constants for methane are a=2.300L^2*atm/mol^2 and b=0.0430 L/mol.
in a laboratory you determine that the density of a certain solid is 5.23times10-6kgmm3. convert this density into
Before the reaction, the volume of hte system was 6.60L. After the reaction, the volume of the system was 2.00L. Calculate the total internal energy change, Delta U, in kilojoules
A solution is prepared by adding 3.24 grams of an unknown compound to 217 g of cyclohexane (C6H12). This solution freezes at 3.8C. Calculate the molar mass of the compound.
A sample of compound B having an unknown concentration is measured to have an absorbance of .90 in a 1.00 cm path length cell at 500 nm. What is the concentration of B in this sample, assuming Beer's law holds
What is the pH of 0.346 M diethylammonium bromide, (C2H5)2NH2Br. The Kb of diethylamine, (C2H5)2NH, is 6.9 x 10-4
Cu+(aq) + 2 Cl ?(aq) reverse reaction arrow CuCl2?(aq) K = 8.7 104. Calculate the solubility of copper(I) chloride in 0.36 M NaCl.
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