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The molecular weight of Glycine is 75.07g/mol, and 155.15g/mol for histidine. You want to purify each from a solution that contains both so you load them onto a gel-filtration column. Which will elute first from the gel-filtration column and why?
What mass of iron would be required to cover a football playing surface of 120 yds × 60 yds to a depth of 1.0 mm?
Draw the accepted mechanism for each reaction and illustrate how each stereoisomer is formed in the reaction.
A piece of the mineral zircon is found to contain a Pb-206:U-238 ratio of 0.213 g:1.00 g. Assuming all Pb-206 in the sample is attributable to decay of U-236
Chemical analysis of the two compounds reveals that 0.25 mol ACl 2 has a mass of 100.0 g and 0.50 mol BCl 2 has a mass of 125.0 g. Determine what are the molar masses of ACl 2 and BCl 2 ?
determine how many grams of oxygeno2 would be used when 10.82 litres nitric oxide nog is formed at the temperature of
The following questions pertain to the magnitude of the x-component of the speed(absolute value of the velocity) cx=|vx| of atoms in a gas, whose probability distriubution has the form P(cx)= ae^-bc2/x. Write down the integral you would need to eva..
a researcher plans to compare two treatment conditions by measuring one sample in treatment 1 and a second sample in
The chemical 5-amino-2,3-dihydro-1,4-phthalazinedione, better known as luminol, is used by forensic scientists in analyzing crime scenes for the presence of washed-away blood.
a container holds 2,0 of gas. the total average change in KE of gas molecules in the container is equal to the the sum of KE of an 8,0x10^-3 -Kg bullet with speed
Draw the product obtained when cis-3-octene is treated first with Br2 in CH2Cl2, second with NaNH2 in NH3, and then finally with H2/Lindlar's catalyst.
The freezing point of pure benzene was measured as 5.49 °C. With the same benzene and the same equipment, the freezing point of a solution containing 6.60 g of an unknown compound in 140 g of benzene was found to be 2.35 °C.
By titrating 15 ml of .1008M sodium hydroxide is needed to neutralize a .2053 gram sample of organic monoprotic acid. what is the molar mass of the acid? If the acid is 5.89% H, 70.6% C and 23.5% O by mass calculate the chemical formula
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