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A particular solution of butanoic acid has a measured pH of 5.10. What is the formal concentration of the acid in this solution? What are the fractional compositions for both the acid and its conjugate base?
The mass of a 0.106 mol of a compound is 6.366 g. What is the molar mass of this compound to three significant figures
stable globular units unit of tertiary structure clusters of secondary structure may be distinct functional units of a protein Both: depends on primary structure depends on hydrophobic interactions may retain a 3d structure when seperated from ent..
SO2Cl2, decomposes when heated. The initial concentration of SO2Cl2 was 0.0248 mol/l if the rate constant is 2.2x10^(-2)/s, what is the concentration of SO2Cl2 after 2.0 hours? the reaction is first order. SO2Cl2(g)->SO2(g)+Cl2(g)
determine the equilibrium concentrations.at a particular temperature k1.00 x 102nbspfo rthe reaction.h2g f2g
A student extracted the active ingredient from several analgesic over-the-counter drugs to determine the composition of each one. Based on the label he tested all the drugs to see if they contain acetaminophen (ACE), aspirin (ASP) and caffeine (CAF)...
Calculate the osmotic pressure associated with 50.0 g of an enzyme of molecular weight 98,000 g/mole dissolved in 2600 mL in of benzene at 30.0 degree celcius
Suppose a bone from an ancient human contains 17.5% of the {rm C}-14 found in living organisms. How old is the bone?
How would you prepare a sodium phosphate at pH 7. What species would you use, what concentrations. Remember phosphoric acid has three pKas
What is the concentration of [Cr2O7 ^-2] in the first dilution add that is made by adding 1.00 mL of DI water to 5.00 mL of the stock potassium dichromate solution?
the atomic radius of a helium atom is 31 pm. what is the diameter of one helium atom in centimeters?
If the absolute temperature of a gas is doubled, what happens to the root-mean-square speed of the molecules?
the rate constant for the second order -reaction is NOBr(g)------>NO(g)+1/2Br2(g) is 48 L/mol*min at a certian temperture. How long will it take for 90.0% of a .0200M solution of NOBr to decompose
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