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A sample of an unknown gas effuses in 12.8 min. An equal volume of H2 in the same apparatus at the same temperature and pressure effuses in 2.11 min. What is the molar mass of the unknown gas?
Despite that allylic radical can have only 2 resonance structures versus 5 resonance structures for benzylic radical, why allylic radical benzylic radical in stability.
Calculate the binding energy of the 6Li nucleus in Joules per nucleon, given the following nuclear masses: 6Li = 6.01348 amu, proton = 1.00728 amu and neutron = 1.00867 amu.
describe how will you prepare a supersaturated solution of potassium nitrate in water.
What is the value of the equilibrium constant for Haber process at 298K if the equilibrium concentration are as follows:
Construct a rough plot of pH versus volume of added base for the titration of 50 mL of 0.050 M HCN with 0.075 M NaOH. Ka = 4.0*10^-10 for HCN (a) What is the pH before any NaOH is added? pH = 5.36 (b) What volume of base, in milliliters, is requir..
what is the pressure in millimeters of mercury of 0.0110 of helium gas with a volume of 214 at a temperature of
Write balanced net ionic equation for the neutralization of equal molar amounts of HBr and NH_3
A solution containing 29.95 mg of an unknown protein per 29.0 ml solution was found to have an osmotic pressure of 3.30 torr at 32 degrees C. What is the molar mass of the protein?
The extent of ionization of a weak electrolyte is increased by adding to the solution a strong electrolyte that has an ion in common with the weak electrolyte.
The protein solution consists of albumin (40 g/L at Mm = 69,000 daltons), globulins (70 g/L at MW = 150,000 daltons), and fibrinogen (60 g/L at Mm = 340,000 daltons). Assume that T=25 C and the proteins form an ideal solution. What is the osmotic ..
Compute the number of gms of CoCl2 that would be needed to prepare the solutions:(a) 550 mL of a 1.75 M solution (b) 210 mL of a 0.0180 M solution.
The SMA compont of an element that cannot be sub-divided and still retain the chemical properiets of that element is defined as what
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