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If 105 mg of fluorine-18 is shipped at 8:00 a.m., how many milligrams of the radioisotope are still active if the sample arrives at the radiology laboratory at 1:30 p.m. ?
The percent transmittance, %T, reading on a Spectronic 20 for a certain solution is found to be 45%. Calculate the absorbance for the solution
the native conformation of a protein represents the lowest energy state of the polypeptide. would you expect it to be
what is the lewis dot structure for if6 iodine
Depict the formula of the protein leucine from previous to it is oxidized to what it turns into after being oxidized. On the hand, illustrate the molecular formula indicating how many oxygen atoms are needed to oxidize leucine
Write a balanced molecular equation for the overall reaction, using the smallest whole number coefficients, including the states of matter for each reactant and product.
Carbon's 2s and 2p orbitals are hybridized, resulting in three hybrid sp2 orbitals and one (non-hybridized) pz orbital. Each new orbital has one lone electron assigned to it.
One of the buffers to maintain the pH of blood uses phosphoric acid, H3PO4, buffer. Phosphoric acid is triprotic and it's equilibrium constants are Ka1=7.5x10-3, Ka2=6.2x10-8, and Ka3=3.6x10-13. How would we prepare 2.0L of a phosphoric acid buffe..
In peptides and proteins (peptides simply being smaller proteins), the amine nitrogens of amino acids are linked to the carboxyl carbons of other amino acids by peptide (aka amide) bonds formed by condensation reactions
The Al2O3 does not react. If the sample residue weighs 2.675 g, what is the mass fraction of Fe2O3 in the original sample?
Question- For which salt, K2SO4, Li2SO4, KClO4, or NH4Cl, will increasing the temperature of the water have the greatest change in solubility per 100 g solvent?
Each 1.000 g of 238U that decays eventually produces 0.866 g of 206Pb. If the half-life of 238U is 4.468 x 10^9 years, what is the age of a mineral that has a 238U/206Pb mass ratio of 2.00?
at 25 degc the equilibrium partial pressures for the following reaction were found to be pa 8.00 atm pb 5.40 atm pc
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