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Problem- The first excited energy level of the helium atom is 3.13 10^-13 J above the ground level. Estimate the temperature at which the electronic motion will begin to make a significant contribution to the heat capacity. That is, at what temperature will the ratio of the population of the 1st excited state to the ground state be 5%?
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For a mass of 0.010 g Mg and 5.0 mL of 1.00 M HCl, calculate the partial pressure of the resulting H2(g) in a flask with V = 145 mL at 25?C.
explain why all the solutions iron iii nitrate and potassium thiocyanate used in this experiment were made in 0.1 m
as per the ideal gas law a sample 1.075 mol of n2 in a 1.430 l container at temperature of 267.6 kelvin must exert a
1. Draw the mechanism for the methanolysis of 1-bromo-1-methylcylohexane 2. Draw a free energy diagram for the above reaction
Explain What is meant by industrial nitrogen fixation. What is produced during this process
Problem- Upon combustion, a 1.000 g sample of a compound containing hydrogen, oxygen and carbon produced 1.50 g CO2 and 0.41 g H2O. a. Find the empirical formula. This empirical formula should be written with whole numbers.
With a solution in them connected by a liquid salt bridge junction filled with KNO3. In one solution you have a graphite electrode that is connected with a wire to a copper electrode in the second soution.
The current concentration of carbon dioxide in theatmosphere is approximately 387 ppm (by volume). By what percentage does the concentration increase in one year due to fossil fuel combustion
Predict whether the equilibrium favors the reactants or the products for each of the following reactions: a)H3PO4(aq)+H2O(l) H3O^+(aq)+H2PO4^-(aq). b)CO3^2-(aq)+H2O(l) OH^-(aq)+HCO3^-(aq) c)HS^-(aq)+H2O(l) H3O^+(aq)+S^2-(aq) d)HCN(aq)+CH3-NH2(aq..
The wedge is connected to a pendulum and swings through an arc and hits the sample at the bottom of the arc. The sample breaks and the wedge continues its swing to a height of 0.5 m. The energy required to break the sample is closest to
If we could take IR spectra on decanedioyl chloride and the product that you made, which of these two molecules would you expect to show higher C=O stretching frequency. Why
A water carbonating plant operates by providing carbon dioxide at 5.0 atm. Estimate the molar concentration of CO2 in carbonated water it produces at 25 ºC.
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