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What is the pH at the equivalence point when when 25.0 mL of 0.189mol/L HN3(aq) is titrated with 0.123 mol/L NaOH(aq)?Assume the temperature is 25oC. (For HN3,pKa=4.72 at 25oC).
if a 5.0ml aliquot (portion) of the above solution was taken and diluted to 500.0mL. What is the concentration of this new solution
What mass of Na2S2O3 is required to prepare 1.00 L of a solution that will dissolve 1.00 g of AgBr by the formation of Ag(S2O3)2^3-? Show work.
how many mL of 0.122M MnO4^-1 are required to react with an excess of C2O4^2- in order to produce 75.25 mL of carbon dioxide gas measured at 30.0 degree c and 715 torr?
The mass of the Earth's Moon is 7.35 x 10^22 kg. what is the mass expressed in megagrams , Mg?
chemists studied the formation of phosgene by sealing 0.73 atm of carbon monoxide and 0.98 atm of chlorine in a reactor
If the mass of the metal cylinder pictured below is 18.71 g, calculate the density of the cylinder.
What is the minimum number of moles of H2SO4 that must react to form 1.7752 moles of manganese(II) sulfate?
A calorimetry experiment determined that the combustion of 1.01 g of H2 reacting with excess O2 producing H2O gave q=143 kJ. Calculate the change in enthaply.
Nitromethane will absorb 240nm light. Assuming that each nitromethane molecule absorbs 1 photon, how many molecules would it take to absorb 1 kJ of light at 240nm
if you were to draw all the products of radical bromination of ethane, how many structures would you draw
explain the advantages and disadvantages of using high gold content bonding alloys when constructing bonded porcelain
how many liters of softened water containing a sodium concentration of 5.8times10-2 sodium by mass have to be consumed
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