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Explain what is the pH at the equivalence point in the titration of 50mL of 0.240 M HCN with 0.200 M KOH given that Ka for HCN is 4.9 x 10-10?
which had been effectively diluted to a volume of 200mL? b) how many grams of Cu were in the sample? c) how many grams of Cl were in the sample? How many moles? d) What is the formula of the copper chloride compound?
The concentration of ammonia in a solution is 0.10M. What is the concentration of hydroxide ion in the solution. The Kb of ammonia (NH3) is 1.8 x 10 -5
how will you be able to visibly detect the oxidation proces of benzyl alcohol to
How many grams of aspirin were lost in the washing process you used to purify your product, assume you used 50 ml of water for washing
A 6.5g sample of diprotic acid requires 137.5mL of a .75M NaOH solution for complete neutralization. Determine the molar mass of the acid.
If the internal ph of muscle cell is 6.80, what is the HPO4^2-/H2PO4^- ratio in this cell. the values are pk1=2.12, pk2=7.21, and pk3=12.32 for phosphoric acid, h3po4.
The mole fractions of CO2 and O2 in the atmosphere have been estimated to be 4.2 x 10-5 and 0.2, respectively. Given the Henry's law constants of 1,600 and 43,000 atm, respectively, calculate the ratio of CO2:O2 in both the atmosphere and in the o..
The rate constant of the reaction: a. Depends on the concentration of reactants b. Describes the rate of the reaction when it reaches equilibrium c. Is a thermodynamic constant that is always true for a given reaction d.
What are some of the side products that can occur in the preparation of meso-Tetraphenylporphyrin and Metalloporphyrin using pyrrole and benzaldehyde in acetic acid
What is the total number of valence electrons that must be shown in the Lewis structure for magnesium fluoride B. How many dots would be shown in the Lewis symbol for phosporus. Use a number, not a word.
What is the structure of the product formed in the following reaction of an epoxide with ethoxide ion? If more than one stereochemical product is possible
Write a chemical equation for the formation of methionyl glycine from the constituent amino acids.
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