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Explain what physical process takes place to the electrons of a pi bond when it absorbs a photon of ultraviolet light?
the following experiment was carried out with a newly made gaseouschlorofluoro carbon. 50.0 ml of the gas effused
An organofluorine compound has a density of 0.773 g/L at 18.5 C and 223 mm Hg pressure. calculate the molar mass of the compound
Suppose that 35.55 mL of permanganate solution (KMnO4) is required to titrate 1.2055 grams of iron(II) ammonium sulfate hexahydrate. Calculate the concentration of the permanganate solution.
What is the molarity of urea, CO(NH2)2, if 98.3 mg of the 97.9% pure solid is dissolved in 5.00 ml of aqueous solution?
3.5 g of a hydrocarbon fuel is burned in a vessel that contains 250. grams of water initially at 25.00 C. After the combustion, the temperature of the water is 26.55 C.
Calculate the concentration of ethanol in wine in terms of mass percent and molality. mass percent? answer in % molality? answer in mol/kg
A flask contains a mixture of hydrogen and oxygen. The pressure exerted by these gases is 785 mmHg. If the partial pressure of the hydrogen in the mixture is 395 mmHg, what is the partial pressure of the oxygen?
What mass of calcium chloride is dissolved in 100. mL of a 1.20 M solution of calcium chloride
Write complete ionic equation to show the reaction of aqueous lead(II) nitrate with aqueous potassium sulfate to form solid lead(II) sulfate and aqueous potassium nitrate.
one day you notice that the outside temperature increase by 16 degrees Fahrenheit between your early morning jog and your lunch at noon. what is the corresponding change in temperature in the Celsius and Kelvin scales?
A solution of 0.01M acetic acid is found to have a PH of 3.63 . Calculate the Ka for the acid
which molecular species listed would be necessary for the formation of pentanol from the reaction of 4-methyl-2-pentene with sulfuric acid and water as the solvent
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