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Which of the following statements regarding the Bohr model of the hydrogen atom is incorrect? A. Bohr's model shows the electron circling the nucleus in fixed orbits. B. In Bohr's model, electrons could exist between orbits. C. In Bohr's model, when an electron absorbs energy, it can move to a higher-energy orbit. D. In Bohr's model, when an electron emits energy, it can move to a lower-energy orbit. E. In Bohr's model, n = 1 is the lowest energy orbit.
Calculate ΔH and ΔStotal when two iron blocks each with mass of 1.00kg, one at 25'C and one at 250'C are placed in contact with each other in an isolated container.
Consider hte boiling of a liquid such as water in a frictionless piston and cylinder device computer the work obtained from the psiton when 1 kg of liquid water is vaporized to steam at 100 degrees C
The pH of 0.750 M sodium hypochlorite, NaClO, is 10.72. What is the pKb for this base?
what features would you expect to be different when comparing the ir spectra of serine and tyrosine? provide at least
A gas-filled balloon having a volume of 2.00 L at 1.2 atm and 25°C is allowed to rise to the stratosphere (about 30 km above the surface of Earth), where the temperature and pressure are -23°C and 3.00 10-3 atm, respectively. Calculate the final v..
Write mathematical equation that show how you will calculate the detected activity from the count rate the sample KCl
an unknown cu2 sample gave an absorbance of 0.262 in an atomic absorption analysis. then 1.00 ml of solution containing
What weight of sodium acetate, NaCO2CH3, must be added to 500.0 mL of 0.500 M acetic acid HCO2CH3 to produce a buffer solution
The equilibrium constant for this reaction is 1.70 x 10^-3. Suppose that 0.860 mol N2 and 0.580 mol O2 are mixed in a 4.00-L reaction vessel. What will be the concentrations of N2, O2, and NO when equilibrium is established?
cylinders of compressed gas are typically filled to a pressure of 200 bar. for oxygen, what would be the molar volume at this pressure and 25 degrees Celsius based on the van der waals equation
When 5.00 × 1022 molecules of ammonia react with 4.00 × 1022 molecules of oxygen, how many grams of nitrogen gas are produced? 4NH3(g) + 3O2(g) → 2N2(g) + 6H2O(g)
calcium phosphide reacts with water to produce calcium hydroxide and phosphine. a if you start with 15.0 g of calcium
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