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Problem- A buffer solution is made using a weak acid, HA. If the pH of the buffer is 12 and the ratio of A- to HA is 1000, what is the pKa of HA?
I want you to explain the chemistry in this problem
sodium fluoride naf melts at 993c whereas sodium chloride fluoride melts nacl at 801c. explain why this is the case in
The solution of iron (III) chloride used in this experiment is 0.02M. Determine the amount of iron (III) chloride hexahrdrate
A solution of potassium permaganate is standardized with iron metal, a primary standard. The iron is dissolved in acid, reduced to Fe(II), and titrated with permanganate.
What is the pH of a solution that results when 0.010 mol of HNO3 is added to 500mL of a solution that is 0.10M in aqueous ammonia and 0.20M in ammonium nitrate. Assume no volume change and the Kb for NH3 =1.8*10^-5
can a liquid be identified by the same principl(e.g. mixing an unknown liquid with known liquid) and determining if the boiling point of the mixture is depessed if the two liquids are different?
How much heat is required to raise the temperature of 5.5 x 10^2 g of aluminum by 10°C?
A 50.0 mL glucose solution contains 3.00 g of glucose. What is the mass/volume percent of this solution
Consider the titration of 50.0 mL of 0.217 M hydrazoic acid (HN3) (Ka = 2.6 x 10-5) with 0.183 M NaOH. determine the pH of the solution before any NaOH is added ?
A mass of 1.50 g H2O is sealed in an evacuated 3.0-L flask and heated to 55 °C. What mass of liquid water remains in the flask when equilibrium is established? The equilibrium vapor pressure of water at 55 °C is 118 mm Hg.
Problem- Name the proton-pumping enzyme complexes of the respiratory chain. How many protons are pumped by each per electron pair. Where are the protons being pumped and for what purpose are they being pumped
calculate the initial velocity of a reaction in terms of v max if the substrate concentration is 12 the km. show the
If oxygen gases were collected over water at 20o C as well as the total pressure of the wet gas were 670 mm Hg, what would be the partial pressure of the oxygen
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