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The isotope carbon-11 is used in biomedical imaging and has a half-life of 20.39 minutes. If the imaging agent had an initial rate of 7500 decays per minute (dpm) and if the imagine required 1 hour to complete, what would the decay rate be immediately after the test is completed?
Write the overall reaction, showing how much ATP (Adenosine tri phosphate) can be produced per pentose used also write an equation for the generation of NADPH using ribose as a sole source of carbon?
Calculate the molar solubility of barium fluoride in water at 25 degrees celsius. The sp constant for BaF2 at this temperature is 1.0x10^-6.
The Balmer series of transitions for the hydrogen atom result in absorption of photons that all originate from the n = 2 level. What are the longest and shortest wavelength photons in the Balmer sequence?
We have a nuts, bolts, and indirect measurement lab coming up. We'll get a bag of nuts/bolts and I need 2-3 methods on estimating the mass of a bolt without opening the bag. Thanks.
Meaning, use and calculation of empirical formulas, In this introduction are given the explanation of how to find out an empirical formula if one has found out the chemical elements of an unknown substance and measured their ratio of masses
If 5.28 x 10^3 kg each of NH3, O2, and CH4 are reacted, what mass of HCN and of H2O will be produced, assuming 100% yield?
If Kp = 1.80 for this reaction, what is the total pressure inside the vessel at equilibrium?
The extent of fragmentation for ionic compounds can be derived by comparing the molality expected if no dissociation with what is actually obtained from experiment.
Calculate the empirical and molecular formulae of A and B. Deduce the structural formulae of A and B. State the type isoerism exhibited by A and B.
If a piece of rock that has a volume of 0.73 L and a mass of 1524 g, what is the density of the rock in g/mL?
Which element has the most atoms? 10 grams of neon, 16 grams of oxygen, 32 grams of selenium,
Which components of an acrylamide gel effects qualities of the final product, and which components affect the speed of polymerization?
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