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How does electron confinement in an ion or molecule affect its color?
Provide a structure for the following compound: UV spectrum: ?max = 272 nm (? = 39,500); EI mass spectrum: m/z = 129 (molecular ion and base peak); IR: 2200, 970 cm-1;
When Cl2 is used as water disinfectant, the following reactions should be used to determine the concentration of different species.
at a constant temperature which of the following would be expected to affect the rate of a given chemical reaction?1.
If a 220 mg piece of gold (density =19.32 g/cm^3) is hammered into a sheet measuring 2.3x1.0 ft, what is the average thickness of the sheet in meters?
A student found that the mass of an empty specific gravity bottle was 21.431 g. Metal pieces were added to the dry bottle. The specific gravity bottle and the metal pieces together
Which of the following equations represents the proper net ionic equation for the complete neutralization reaction between the weak acid HClO2 (aq) and the strong base KOH (aq)?
a compound x contains the elements carbon hydrogen and oxygen. after 35 g of x were burned in pure oxygen 59 g of
If the uncertainty in determining the weight of the precipitate is not to exceed 1% on a balance accurate to 0.1 mg, what is the minimum mass of the sample that should be taken for analysis
told that she should use a 50.0% excess of acetic anhydride as well as expect to get a 65.0 % yield in the reaction. Explain how many grams of salicylic acid as well as of acetic acid should she use
determine the amount of heat energy needed to convert 255g of substance x from 40 degrees to 300 degrees
Compare the staggered conformers of 1,1,1-trifluorobutane (C2-C3). Why is one of the staggered conformers most stable. Why is one of the staggered conformers least stable
How would I calculate the theoretical enthalpy of reaction between HCl + NaOH -> H2O + NaCl
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