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What are some main differences between size exclusion and ion exchange chromatography and what are their levels of sensitivity or detection?
Pure gold can be made into extremely thin sheets called gold leaf. Suppose that 5.0 x 102 kg of gold is made into gold leaf having an area of 3620 m2.
A researcher studying the nutritional value of a new candy places a 5.9 gram sample of the candy inside a bomb calorimeter and combusts it in excess oxygen.
What kinetic energy must the electrons have in order to resolve a protein molecule that is 2.30 nm in diameter? Take the mass of an electron to be 9.11× 10-31 kg.
the thermochemical equation for the combustion of butane is c4h10g 132o2g --gt 4co2g 5h2ol delta h -2877kjwhat is
If a contemporary wooden chair were somehow preserved to for the next 3,900 years, what C-14 dacay rate should be expected from the wood used to make the chair? (t1/2 = 5730)
calculate the molecule weight of the liquidnbsp if 2.31grams of the vapor of a volatile liquid is able to fill a 498-ml
If 2.5 mol of ethylene oxide is decomposed at 93 degrees celcius what will be the final temperature of the products? The heat capacity of the products is 110.13J/mol C?
Calculate the number of drops (20 drops = 1.0mL solution) of the limiting reactant solution required to complete Reaction D.
Calculate the vibrational partition function of CS2 at 500K given the wavelength 558 cm-1 (symmetric stretch), 397 cm-1 (bend; two modes), and 2097 cm-1 (asymmetric stretch)
ammonium carbonate decomposes upon heating according to the following balanced equation nh42co3-gt2nh3co2h2o. calculate
in the laboratory a student combines 45.9 ml of a 0.197 m magnesium bromide solution with 16.1 ml of a 0.541 m cobaltii
Electrophilic Substitution, Which compound is more reactive toward electrophilic substitution (e.g., nitration)? Explain you reasoning.
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