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Compute the final ph of 25ml of the 0.1 trIs. HCl/Tris buffer ph = 6.60 after the addition of 1ml of 0.1 mol/l NaOH.
What kinetic energy must the electrons have in order to resolve a protein molecule that is 3.80 nm in diameter? Take the mass of an electron to be 9.11× 10-31 kg.
If 2.50L of 1.25M BaCl2 added to 3.50L of 2.45 M NaCl, what is molarity of Chloride ions in final solution
thirty pounds of methane are held in a sealed container at 100 degrees F. The volume of the container is two cu ft. Calculate the volume of gas in the container.
how many grams of ethylene glycol must be added to 700g of water to yield a solution that will freeze at -8.5 degrees Celsius?
What volume of gas (H2 and O2 combined) at STP is released by decomposition of 93.405g of H2O? 2H2O (l) 2H2(g) + O2(g)
calculate th volume of a chlorine solution ( in milliliters) a homeowner should add to her swimming pool if the solution contains 8.00 percent chlorine by mas and there are 5.63 x 10^4 gallons of water in the pool (1 gal = 3.79; density of liquids..
what is the standard emf you would obtain from a cell at25oc using an electrode in which i-nbspaq isin contact with i2s
(a)What is the coordination geometry about the vanadium ion incrystals of the alum? Write balanced equations for each reduction step
Calculate the solubility product constant for Pb(IO3)2 (4.3 x 10^-5 M), given that the molar concentration of saturated solution is as indicated in parenthesis.
A 0.625 mole sample of N2 gas at 1.50 atm and 45C occupies a volume of 10.9L. What volume in liters would each of the following molar sized samples of gas occupy at the same temperature and pressure. a) 2.00 moles CO2
the appropriate number of significant figures. Use leading zeros if appropriate.
The first-order disappearance of a substance has a half-life of 34.0 s. How long does it take for the concentration of the substance to fall to 12.5% of the original value
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