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what amount of solid NaOH must be added to 1.0 L of a .15 M H2CO3 solution to produce a solution with [H+] = 3.5x10^-11 M? There is no significant volume change as a result of the addition of the solid.
Chromatography in the presence of 6 M guanidine hydrochloride yields only a peak for a protein of Mr 60,000. Chromatography in the presence of 6 M guanidine hydrochloride and 10mM 2-mercaptoethanol yields peaks of Mr 34000 and 26000
A rigid vessel contains 10 kg of steam. the steam is initially at 10 bar and 300 C. After a period of time the pressure in the vessel is reduced to 1 bar due to heat transfer with the surroundings.
What is the initial mole of Aniline? what is the initial mole oh HNO3 if 40mL of the acid was used in the titration
what is the simplest molecular formula for bupropion which is composed of 65.13% carbon, 7.575% hydrogen, 14.79% chlorine, 5.84% nitrogen and 6.67% oxygen
Weight and volume measurements on a sample of pure cadmium showed its density to be 521 lb/ft3 is this a 3.5% error?
What is the wavelength of a light ray if its frequency is 4.64 x 1014 s-1? answer in units of nanometers (nm).
To me these seem like the should be counted the same way but one is counted from left to right and one from right to left. Why is that. What is the rule. Keep in mind that I am a new chemistry student.
draw structures of the active sites of the deoxy and oxy form of hemerythrin showing the complete ligands attached to
Calculate the amount of heat, in kJ, needed to convert 15.0 g of ice at -21 C to liquid water at 75 C. Specific heat of ice = 2.10 J/(g C); heat of fusion of ice = 334 J/g; Specific heat of water = 4.18 J/(g C)
A compound containing 3 atms of carbon and 8 atoms of hydrogen in a reaction with oxygen molecules. the 2 end poducts of the equationis carbon dioxide an water. what element should you look at first in balancing this equation
The reaction between sodium metal and chlorine gas is highly exothermic and produce NaCl. Comment on this observation relative to the calculated enthalpy for the aforementioned gas-phase reaction.
for ammonia, Kb is 1.8*10^-5, to make a buffered solution with pH of 10.0, the ratio of [NH4+] to [NH3] must be
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