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The first steps in the radioactive decay of 257Uuh involves the rapid and successive emission of 4 alpha particles. [Note: Uuh is the symbol for ununhexium, which is element number 116.] An original sample of 0.426 micrograms of 257Uuh yielded 0.237 micrograms of the appropriate product nuclide after 40.36 microseconds of decay had occurred. What is the half-life (microseconds) for 257Uuh
A certain quantity of gas occupies 61.3 mL at 68C. If the pressure remains constant, what would be the volume of the gas at 128C?
Calculate the number of moles of H+ and OH- initially present the number of moles of h2O produced in the response regulation reaction.
Draw one energy diagram showing both reaction pathways & label all transition states, intermediates and products as well as activation energies.
A rock sample contains traces of 238U, 235U, 232Th, 208Pb, 207Pb, and 206Pb. Careful analysis shows that the ratio of the amount of 238U to 206Pb is 1.164
If the average solar insolation in USA = 4.25 kWh m-2 per day , and the area of USA is 9.36 x 1012 m2. Calculate: 1. The total available power in W. 2
the structures of the ions Ni2+ (aq) and Fe3+ (aq) as they exist in aqueous solution in octahedral shape.
hot methanol and then stored the recrystallization solution until the next lab period. What possible effect on your results due to this experimental error could take place?
From the above data, find the number of millimoles of acidic impurites and what is the ratio of acetylsalicyclic acid to other acid impurites?
What mass of barium sulfate is produced when 100.0 mL of a 0.100 M solution of barium chloride is mixed with 100.0 mL of a 0.100 M solution of iron(III) sulfate.
Why will the extraction of benzoic acid by NaHCO3 generate a greater pressure of gas in the separatory funnel than the extraction
why is significant serum (in the blood stream) chlorestrol reduction so difficult, and why do most of the drugs designed to reduce
health risk does each of the following classification represent Corrosive Carcinogen Teratogen Mutagen
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