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How many milliliters of 0.100M NaOH are required to neutralize 85.0mL of 0.250M H2SO4 ? The balanced neutralization reaction is:H2SO4(aq)+2NaOH(aq)-->Na2SO4(aq)+2H2O(l)
A buffer solution is prepared by mixing 50.0mL of 0.300 M NH3(aq) with 50.0mL of 0.300 M NH4Cl(aq). The pKb of NH3 is 4.74. NH3 + H20 ----> NH4+ + OH-
What is the pH of a solution prepared by dissolving 0.10 mol sodium acetate and 0.20 mol of acetic acid in enough water to make 2.0 L? Ka= 1.75 *10^-5
Write out the un-ionized structure of valine & phnylalanine. Do either have enantiomers? Write the zwitterion structures of both.
An uncovered cup (1/2 pint) of trichloroethane (d=1.325 g/mL) is kept in an 18-ft3 refrigerator at 39 F. What percentage (by mass) of trichloroethane is left as a liquid when equilibrium is established
Given the equation: 2Cr(s) + 3H2O(g) = Cr2O3(s) + 3H2(g) How many moles of chromium metal are required to react with 3.17 moles of water
The Greek mathematician Archimedes is credited with discovering how to verify the amount of pure gold in an irregularly shaped object (e.g., a crown) by placing it in water.
when 2-butanol undergoes E1 dehydration,three alkenes are obtained. Draw the sturctures for these alkenes.Which alkene would you predict to be formed in greatest abundance.
in the barium chloride laboratory activity what change occurred in the physical appearance of the barium chloride
Samples of the following volatile liquids are opened simultaneously at one end of a room. If you ate standing at the opposite end of the room, list the following species in order you would smell them? Assume that your nose is equally sensitive to ..
if i have 0.04M SDS, 0.01M NaCl , the volume of SDS is 0.2 ml and the total volume is 50.2 ml then how i calculate the concentration of ions from the mixed solution of SDS/Nacl
To determine the enthalpy change for this reaction, 0.158 g of Mg metal is combined with enough HCl to make 100.0 mL of solution in a coffee-cup calorimeter of negligible heat capacity.
Hospital X-ray generators emit X-rays with wavelength of about 15.0 nanometers (\rm nm), where 1\;{\rm nm}= 10^{-9}\;{\rm m}. What is the energy of the X-rays
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