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The energy levels the electron can occupy in the He+ ion can be calculated using the energy level equation. Calculate the frequency (Hz) of the photon absorbed when the electron goes from a n= 3.00 energy level to a n= 4 energy level. Express answer in scientific notation.
If the barometer at your house reads 767.2 mm of mercury what is the atmospheric pressure in kPa
Write a balanced hydrolysis equation to show why solutions of aluminum chloride are acidic. (Hint; Al3+(aq) ions can be written Al(H2O)63+(aq).)
identify the compound in each of the following pairs that reacts with sodium iodide in acetone at the faster rate 1-Chlorohexane or cycleohexyl chloride
The amino acid Histidine has a side chain for which the pKa is 6.00. Calculate what fraction of the Histidine side chain will carry a positive charge at pH 7.5
2ch3oh3o2 gives 2co24h2o. calculate the heat of combustion of one mole of methanol under standard
When compound X undergoes ozonolysis, acetone, is the only product produced. Propose a structure for compound X.
Which alkyl bromide reacts fastest with methanol. options: 2-Bromo-2-methylbutane 2-Bromopentane 1-Bromopentane 2,2-Dimethyl-1-bromopropane
Chlorine was previously identified as a catalyst in the breakdown of ozone into oxygen gas. Using the enthalpy of reaction for two reactions with ozone, determine the enthalpy of reaction for the reaction of chlorine with ozone.
Explain Coronary Artery Disease: Good and Bad Cholesterol, A middle-aged man has been diagnosed as being at high-risk of developing Coronary Artery Disease.
WWOZ broadcasts at a frequency of 90.7 MHz. What is the wavelength (in meters) of this radiation
Write a mechanism for the reaction of an alkyl halide with alcoholic silver nitrate which depicts the type of substitution which occurs. Explains how this mechanism accounts for the relative rate of reactivity of 1°, 2°, and 3° halides in this rea..
a student observed after an experimentnbsp that a gas sample of 250-mlnbsp has a mass of 0.243 g atnbsp a temperature
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