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In the mercury emission spectrum, three emission bands were observed ( which were purple, green, orange and red in the experiment ). In the Bohr model of the atom, each of these bands corresponds to a transition from a particular quantum orbital energy level to another (n = 1, 2, 3,...). For mercury, which observed color band corresponds to the largest energy difference between levels and which is the smallest?
Propose a reasonable synthetic strategy for the synthesis of trans-6-methyl-3-heptene from 4-methyl-1-pentyne.
Make an energy level diagram, showing ALL suborbitals, large enough to accomodate the 1st 36 elements
Calculate the entropy change for the irreversible process of water freezing at -10C. For the crystallization of water at 0C the heat of fusion is 6.01 kJ/mol. The specific heat capacity of water is 4.184J/g C and ice is 2.05 J/g C
what is happening to the observed cell potential, Ecell and E0Cell as Zn2+ increases and Cu2+ decreases?
Based on formal charges, which statement about the best Lewis structure of a molecule composed of one atom each of N, S, and Cl is correct
Calculate the pH of a solution when 0.200 moles of solid NaOH is added to 2.00 liter of 0.250 M HCl. Assume no change in volume.
when strongly heated magnesium sulfide formed a crystalline deposit on the walls of a sealed reaction vessel. metallic
The first-order rate constant for the decomposition of a certain hormone in water at 25oC is 0.125 yr-1. How long will it take for the concentration of the solution to drop from 0.0100 M to 0.0075 M at this temperature
Nylon undergoes depolymerization when heated in aqueous acid. Propose a reaction mechanism that accounts for this fact, using curved arrows to symbolize the flow of electrons.
What is the total linear interaction coefficient (macroscopic cross section) for a thermal neutron in the natural uranium? What is the total macroscopic fission cross section for thermal neutrons
A certain mass of oxygen was collected over water when potassium chlorate was decomposed by heating. The volume of the oxygen sample collected was 720. mL at 25.0 oC and a barometric pressure of 755 torr.
If a 190 mg piece of gold (density =19.32 g/cm^3) is hammered into a sheet measuring 2.1*1.0 ft, what is the average thickness of the sheet in meters?
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