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The isotope 22Na has a half-life of 2.60 years. How much of a 1.00 gram sample would be left after 1.00 yr
How do I know if an E1 or E2 reaction is exothermic or endothermic overall. Can it ever be endothermic? If so, when. All the examples I've seen are exothermic.
How many moles of dinitrogen tichloride correspond to 645 mg of dinitrogen trichloride? How many nitrogen atoms would be required to produce that amount of dinitrigen trichloride.
What is the uncertainty in the energy of the excited state. What is the percentage uncertainty if the energy is measure from the ground state
What is the wavelength of light in unites of nm emitted when the elctron in a hydrogen atom undergoes a transition from level 7 to level 1
what is the density of 53.4 wt% aqueous NaOH if 16.7 mL of the solution diluted to 2.00L gives 0.169M NaOH
Suppose that coal of density 1.5 g/cm3 is pure carbon. (It is, in fact, much more complicated, but this is a reasonable first approximation.)
what is the acid dissociation constant of a weak acid if a concentration of 0.3 M gives a hydrogen ion concentration of 0.001M?
Draw thw active site of an enzyme that contains a macrocycle coordinated to a transition metal. Explain the function of the enzyme
Mario Molina for their work concerning the formation and decomposition of ozone in the stratosphere. Rowland and Molina hypothesized that chlorofluorocarbons (CFCs) in the stratosphere break down upon exposure to UV radiation, producing chlorine a..
On the obtained mass-spectra you got in the expected parent-ion mass region two adjacent lines with almost the same abundance (m/z=258 -100%, and m/z=260 -97%). Fragments do not show any adjacent abundant lines. What conclusion can you derive from..
Report the actual mass of H2O delivered to the flask. (Density of water = 1g/mL at 25°C.) (Poured 100mL of water in flask)
If you have .200 mL of methyl salicyate (density=1.184 g/mL)(molar mass=152.15 g/mol) how many moles do you have?
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