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Consider the electronic transition from n = 2 to n = 4 in a hydrogen atom and select the correct statement below.
A. A photon of 206 nm wavelength and 9.66x10-32 J energy was absorbed by the hydrogen atom during this electronic transition.B. A photon of 206 nm wavelength and 9.66x10-32 J energy was emitted from the hydrogen atom during this electronic transition.C. A photon of 486 nm wavelength and 4.09x10-19 J energy was absorbed by the hydrogen atom during this electronic transition.D. A photon of 486 nm wavelength and 4.09x10-19 J energy was emitted from the hydrogen atom during this electronic transition.
Calculate the ph when 47.0 mL of 0.309 M of a certain monoprotic weak acid, HA, is mixted with 47.0 mL of 0.309 M of sodium hydroxide solution
The complete combustion of methane, CH4, to form carbon dioxide gas and oxygen gas at constant pressure releases 890 kJ of heat per mole of methane consumed. (a) Write a balanced thermochemical equation for this reaction. (b) Draw an enthalpy diagram..
What is the molar concentration of silver ion in a solution containing 1.3 x 10-4 M CrO42-, saturated with Ag2CrO4
The colors of the acid and base forms of the indicator bromocresol green are yellow and blue, respectively, and its pKa is 4.6. What color would be expected for the indicator in a solution of pH 6.0 and in a solution of pH 4.8?
if the the atmospheric pressure is 685 mm Hg, what would the partial pressure of oxygen and of nitrogen be?
When 2.00 mol of NOCl(g) was heated to 225 degrees celcius in a 400L steel reaction vessel, the NOCl partially decomposed according to the equation 2 NOCl(g) -->2 NO(g) + Cl2(g)
Starting out on a road trip you inflate your tires on your car to the recommended pressure of 46.5 psi on a day when the temperature is -5.0 C. Upon arrival at your destination, the temperature is now 28.0 C/ The volume of the tires has increased ..
A fixed quantity of gas at 24 C exhibits a pressure of 745 torr and occupies a volume of 4.40 L. Use Boyle's law to calculate the volume the gas will occupy if the pressure is increased to 1.88 atm while the temperature is held constant.
The frequency of vibration in a quartz watch is 33 kHz. What is the energy required to excite this vibration? Also compute omega for this vibration.
From this data, calculate the temperature at which ice is in equilibrium with liquid water.
when a current of 0.156A is passed through a solution of lead(II) nitrate, lead is deposited at the cathode. How long will it take to deposit 0.10g of lead?
what common laboratory test of viscoelasticity does this test most closely correspond? Estimate the average life of the same tubing in the same rupture test at 30 deg C and 37 deg C
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