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Problem- You have 500mL of a buffer solution containing 0.20M acetic acid (CH3COOH) and 0.30M sodium acetate (CH3COONa).
1) What will the pH of this solution be after the addition of 20mL of 1.00M NaOH solution? (Ka = 1.8E-5)
Illustrate structures to prove your rezoning.
Titration of an oxalate sample gave the following percentages of percent oxalate: 12.28%, 12.54%, and 12.24%. Calculate the average and the standard deviation
at 25.0degc a sample of xe gas occupies 509 ml in a piston-cylider apparatus when the external pressure is 356 torr. at
In a process called liposuction, a doctor removes some adipose tissue from a person's body. If the body fat has a density of 0.94 g/mL and 3 quarts of fat are removed, how many pounds of the fat were removed from the patient
The Gibbs free energy of formation of solid iron (III) oxide is the Gibbs free energy change for the reaction
A white colored salt contains a cation from group 4. It has no reaction with concentrated H2SO4 or AgNO3. It produces an insoluble product with acidic BaCL2
If N2 and H2 at preliminary pressures of 1.5atm and 2.5atm respectively were permissible to react at 300K as well as the total pressure at equilibrium is 4.0atm, define what is the Kp
A protein solution is prepared utilize acetate buffer (pH 4.7). Explain how do you replace the acetate buffer with a phosphate buffer (pH 7.0) without taking drastic measures such as precipitating the protein and resuspending it in the new buffer
the current vs. time graph for a particular electrochemical reaction run at 25degc shows that the current drops off to
Magnesium oxide reacts slowly with water to form magnesium hydroxide. What would be the effect on the observed value for ∆H_rxn for the reaction of MgO if 10%
Phosphorus pentachloride decomposes to phosphorus trichloride at high temperatures according to the reaction:
The density of silver is 10.5g/cm3 what is the volume im cm 3 of an ingot of silver with mass 0.743 kg. If this sample of silver is a cube how long in each edge in cm
The initial concentration of lead(II)nitrate is 0.250M. and we used 1.00 ml. the lead(II)nitrate was titrated with 7.96 ml of 0.0500M of potassium iodide.
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