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A solution of PbI2 has [Pb2+] = 4.5 x 10-5 and [I-] = 6.5 x 10-4. PbI2 has Ksp = 8.7 x 10-9. Write down the reaction that is taking place. Calculate Q. Is Q larger or smaller than the Ksp? Is the solution unsaturated, saturated, or supersaturated? Will a precipitate form in this solution?
What is the amount of energy packaged in a photon with a wavelength of 310 nm. Calculate the frequency of EM radiation with a wavelength of 1.2 x 10-7 m
Calcium carbide reacts with water to form acetylene and calcium hydroxide. From the following enthalpy data calculate Delta Hf for CaC2
How much heat is given off when 11.0 grams of manganese is converted to Mn2O3(s) at standard state conditions? Hf of Mn2O3(s) is -962.3 kJ/mol.
How many grams of magnesium must react to displace 12.5 g of silver from a solution of silver nitrate?
How much heat is required to raise the temperature of 73.5 of water from its melting point to its boiling point?
The question is a slab of steel measures 1.01m x 3.72m x 11.1cm. Steel has a density of 7.86g/cm^3. What is the mass of the slab of steel?
Calculate the volume of carbon dioxide formed at a pressure of 2.50 atm and a temperature of 1250C.
Complete the following equation that illustrates a Brønsted-Lowry acid/base reaction. Phases are optional.
draw the shape of the molecules and give the orbital geometry around the central atom; the molecular geometry; and give the hybridization state
A meteorological ballon contains 250.0L He at 22 degrees celsius and 740.0mm Hg. If the volume of the ballon can vary according to external conditions
calculate the number of PCl3 molecules formed when 97 P4 molecules and 606 Cl2 molecules react?
What is the boiling point of a 0.800 molal solution of sugar in water? Kb = 0.512C/m for water. Sugar does not dissociate in solution and pure water boils at 100C.
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