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The standard enthalpy of formation of the metallocene bis(benzene)chromium was measured in a calorimeter. It was found for the reaction Cr(C6H6)2(s) ? Cr(s) + 2 C6H6(g) that.
Find the corresponding reaction enthalpy and estimate the standard enthalpy of formation of the compound at 583 K. The constant-pressure molar heat capacity of benzene is 136.1 J K-1 mol-1 in its liquid range and 81.67 J K-1 mol-1 as a gas.
Calculate the wavelength of the light emitted when an electron in a hydrogen atom makes each of the following transitions as well as state the region of the electromagnetic spectrum (infrared, visible, ultraviolet, etc.)
Give a detailed mechanism for the nitration of bromobenzene . As part of your answer explain the regiospecificity
determine the freezing point depression of a solution that contains 30.7 g glycerin c3h8o3 molar mass 92.09 gmol in
A 25.0 mL sample of 0.20 mol L-1 HNO2(aq) is titrated with 0.20 mol L-1 KOH(aq) at 25oC. What is the pH AT THE Equivalence point?(FOR HNO2,Ka=4.50x10^-4 at 25oC)
When 5.156 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 15.09 grams of CO2 and 9.269 grams of H2O were produced.
An environmental engineer analyzes a sample of air contaminated with sulfur dioxide. To a 500-mL sample at 700. torr and 38 degrees celcius, she adds 19.50 mL of 0.01017 M aqueous iodine
The K a of hypochlorous acid (HClO) is 3.00 x10^-8 what is the pH at 25.0 degrees C. of an aqueous solution that is 0.0200 M in HClO
Will the recorded temperature change for an exothermic reaction performed in a glass calorimeter be greater or less that that in a styrofoam "coffee cup" calorimeter? Explain. Assume glass to be a better conductor of heat that styrofoam.
the normal boiling point of water is 100.0 degrees c and its molar enthalpy of vaporization is 40.67 kjmol. what is the
Common commercial acids and bases are aqueous solutions with the following properties: nitric acid (HNO3), density 1.42 g/cm3 and 61% solute by mass. Calculate the molarity.
Calculate the pH when 26.6 mL of 0.0025 M HCl is added to 100.0 mL of pure water. Comment and hint in the general feedback.
Calculate the mass of methane that must be burned to provide enough heat to convert 151.0 g of water at 43.0°C into steam at 124.0°C.
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