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Read carefully, 0.1M HCl is added into a mixture of 25mL of water and 25mL of Ca(OH)2. For the end point to be reached 1.3mL of 0.1M HCl is added into the mixture. How would I calculate the molarity of the hydroxide ion (OH-) for this final mixture (51.3mL)
napthalene lowered the freezing point of the solvent by 0.780K. Calculate the molar mass of the compound. [Kf of napthalene= 6.94 K*kg/mol]
Benzene (C6H6) is a trace component of gasoline. What is the mole ratio of benzene to n-octane in the vapor above a solution of 35.0% benzene and 65.0% n-octane by mass at 25 degrees C
Calculate the heat capacity per gram of metal. Assume no heat is lost to the calorimeter or the surroundings. The specific heat capacity for water is 4.184 J/g
what Spartan is doing when it performs a geometry optimization (hint: energy minimization) of a molecule and what kinds of structural changes can result.
5.00 g of SO2 and 5.00 g of CO2 were placed in a 750.0 mL container at 50.0 °C. What is the partial pressure of CO2 in the container?
How many moles of excess base are present? How many additional mL of 0.100 M HCl would be required to neutralize the solution?
Describe clearly why a single indicator solution in only useful for measuring pH over a rather narrow range. Use a specific indicator of solution
adiabatic expansion back to its initial temperature, (c) reversible isothermal compression back to 1.00 atm. Calculate q, w, delta U, and delta H for each step.
Kb of ethylamine, urea and ammonia are 5.6 x 10-4, 1.5 x 10-14, 1.8 x 10-5, respectively. Arrange these bases in the increasing order of basicity
why differential pulse polarography is the most sensitive technique among the different modern types of polarography
Hydrogen Sulfide decomposes to the reaction 2H2S--->2H2+S2. Delta S= 78.1 j/k and the Delta H=169kJ. At what temperature would the reaction be spontaneous
If a buffer solution is 0.260M in a weak base (Kb=5.6x10^-5) and 0.550M in its conjugate acid, what is the pH.
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