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Copper has two naturally occuring isotopes 63Cu (isotopic mass 62.9396 amu) and 65Cu (isotopic mass 64.9278 amu). If copper has an atomic mass of 63.546 amu, what is the percent abundance of each isotope?
Purification of nickel can be acheived by electrorefining nickel from an impure nickel anode onto a pure nickel cathode in an electrolytic cell.
Iron (II) ions catalyze the oxidation of luminol. The intensity of the resulting chemiluminescence has been shown to increase linearly with iron (ii) concentration from 10^-10 to 10^-8 M.
At the end of 2009, global population was about 6.8 billion people. What mass of glucose in kg would be needed to provide 1200 Cal/person/day of nourishment to the global population for one year
The overall reaction order for an elementary reaction always equals its molecularity however the overall reaction rate for multistep reaction can only be determined based on experimental data
A polymer sample combines five different molecular-weight fractions, each of equal weight. The molecular weights of these fractions increase from 20,000 to 100,000 in increments of 20,000.
give explanation why the boiling point of a 2-component mixture increase slowly throughout a simple distillation while
The molecule iodine monochloride ICl has a diple moment of 1.6 D and a bond length of 2.32 A. What is the effective charge on I in untis of electronic charge e
If the sun is a distance of 1.5 x 10^8 km from earth, how many minutes does it take sunlight to reach earth if light travels at 186,000 miles each second
What characteristic H NMR absorptions would be expected in the aliphatic region for 9-hydroxyfluorene
The pH of blood is 7.35. It is maintained in part by the buffer system composed of carbonic acid (H2CO3) and the bicarbonate (hydrogen carbonate, HCO3-) ion. What is the ratio of [bicarbonate]/[carbonic acid] at this pH
Show the product expected from the reaction of the grignard reagent formed from propyl bromide with methyl propanoate
how many milliliters of concentrated hydrochloric acid solution 36.0 hcl by mass density 1.18 gmol are required to
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