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The average bond enthalpy for a double bond is 614 and that of a single bond is 348 . Estimate the energy needed to break only the bond of the double bond of 2-butene. Express your answer numerically in joules per molecule.
The minerals chalcocite (Cu2S) and malachite (Cu2CO3(OH)2) are two primary sources of copper. What is the oxidation state of copper in each of these minerals?
what is the molar mass of the protein? A solution of 7.50 mg of a small protein in 5.00 ml of aqueous solution has an osmotic pressure of 6.80 torr at 23.1 degrees celcius.
A procedure was performed on a 0.49 g sample of copper oxide and 0.40 g of dry copper metal was recovered. Show all the steps solving for the empirical formula of copper oxide and keep significant figures in mind.
according to equation, how many grams of Zn will remain after the reaction is complete? Equation [5] = CuSO4 (aq) + Zn (s) ----> ZnSO4 (aq) + Cu (s)
Write an equation for the formation of an aqueous solution
calculate the concentration of all soluble Hg(II) species. Which Hg(II) species is most prevalent? Assume there are no solids present, that the major ligands present are Cl- and OH-, and ignore activity corrections.
An Ideal gas originally at a temperature T1 and pressure P1 is compressed reversibly against a piston to a volume equal to one-half its original volume, Draw a diagram of the process in the P-V plane.
There are 2.2 mg of lead in exactly 500 g of a water sample. What would the concentration of lead be in parts per million? Round to the nearest tenth. Don't forget the units
An electron is confined to a one dimensional box of length L. It falls from the second energy level to the ground state, and releasee a photon with a wavelength of 322 nm
A volume of 12.8 L is occupied by 0.57 mol of helium gas. What is the volume of 0.78 mol of helium gas under the same conditions?
Predict the products and write a balance equation for each of the following Decomposition
Molecular Mass by Freezing point Depression (Preliminary Lab).
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