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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.
when we heat saturated calcium hydroxide why must c are be taken so that the saturated calcium hydroxide solution does
After filtering, washing, drying, and weighing, the AgBr is found to weigh 0.609 g. What is the mass percent bromide in the metal salt?
A fixed quantity of gas at 21 exhibits a pressure of 730 and occupies a volume of 4.40. Use Boyle's law to calculate the volume the gas will occupy if the pressure is increased to 1.85 while the temperature is held constant.
Oxygen is more electronegative than nitrogen; fluorine is more electronegative than the other halogens. Fluoride is a stronger field ligand than the other halogens, but ammonia is a stronger field ligand than water. Why
The combustion of oxalic acid in a bomb calorimeter yields 2816 J/g at 25 degrees Celsius. Calculate (a) ΔcU and (b) ΔcH for the combustion of 1 mole of oxalic acid (M = 90.0 g/mol)
question a 1.5 gram sample of a gaseous hydrocarbon has a volume of 820 ml when measured at 227 degrees celcius and
What volume of 0.205 M K3PO4 solution is necessary to completely react with 122mL of .0110M of NiCl2? 2K3PO4+3NiCl2=Ni3(PO4)2+6KCl
The solubility of oxygen in water is 6.5mg/L at an atmospheric pressure of 1 atm and temperature of 40°C. Calculate the Henry's law constant of oxygen at 40°C.
Nitrogen and hydrogen gases react to form ammonia gas. N2(g) + 3 H2(g) 2 NH3(g) At a certain temperature and pressure 1.4 L of N2 reacts with 4.2 L of H2. If all the N2 and H2 are consumed, what volume of NH3, at the same temperature and pressure,..
a 25.0 ml sample of river water was titrated with 0.00100 m na2cr2o7 and required11.5 ml to reach the end point. what
Lead has a face-centered cubic lattice with all atoms at the lattice points and a unit-cell edge length of 495.0pm its atomic mass is 207.2 amu what is the density of lead?
There are two key concepts to keep in mind throughout the exercises: 1) What is the unit cell for each structure? 2) What are the coordination environments of the atoms involved?
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