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A litre of solution containing 0.1 M of CH3COOH and 0.1 M of CH3COONa provides a buffer of pH 4.74 . calculate the pH of a solution after the addition of 0.02 M of NaOH . The dissociation constant of CH3COOH is 4.75x10-5.
Hydrogen atoms that are bonded to an sp3 hybridized carbon atom normally appear between 0.9 & 1.8 ppm and are said to be shielded
If a drop of water clings to the outside of the foil cap and is not removed, how would the experimentally determined molecular weight be affected? Too high or too low?
Adrenaline is the hormone that triggers release of extra glucose molecules in times of emergency or stress. A solution of .64g of adrenaline in 36g of CCl4 causes an elevation of .49 degrees C in the boiling point. What is the molar mass of the ad..
Liquid HCN is unstable with respect to trimer formation. What would be the structure of this trimer
Nitrogen forms several gaseous oxides. One of them has a density of 0.869 g L-1 measured at 764 mmHg and 150°C. Write the formula of the compound
More gas is then added to the container until it reaches a final volume of 13.9 L. Assuming the pressure and temperature of the gas remain constant, calculate the number of moles of gas added to the container.
What would be the molarity of a nonelectrolyte in an aqueous solution if it exhibited an osmotic pressure of 14060torr at 220C
How many moles of methane (CH4) gas are in 745 mL at 25.5C and 730 torr?
Synthetic polypeptides can assume an helical structure under appropriate conditions. Indicate whether polylysine and polyglutamate form an helix or a disordered structure at the indicated pH values.
all ammonium compounds which contain an ammonium ion nh4 and a negative ion are thermally unstable.a. discuss two ways
A buffer solution is prepared by dissolving 1.50 g each of benzoic acid, C6H5CO2H, and Sodium Benzoate, NaC6H5CO2, in a 150.00 ml of solution. The Ka for benzoic acid = 6.3E-5.
Draw the molecular orbital diagram for the acetylide anion (C22-). Assume that order of the n=2 molecular orbitals in increasing energy is
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