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Write the Henderson-Hasselbalch equation for a solution of propanoic acid (CH3CH2CO2H, pKa = 4.874 ) using HA and A- in the expression. pH= ? Using this equation, calculate the quotient [A-]/[HA] at A) pH 4.19 B) pH 4.874 C) pH 5.50.
Consider the unbalanced equation above. A sample of impure mercury(II) oxide is heated and the HgO decomposed completely. If 580. mL of O2 is collected by displacement of water at a barometric pressure of 790.0 mm Hg and 25.0°C,
Define the following terms: carbohydrate, monosaccaride, disaccharide, polysaccaride. Give an example of a simple sugar and name the functional group associated with your example.
Calculate the cell potential after the reaction has operated long enough for the [Al3+] to have changed by 0.32 mol/L. (Assume T = 25°C.)
Calculating new pH, a). How many mL of each of 0.10M lactic acid solution and 0.10M NaOH solution are needed to make 800mL of a buffer of pH 3.50?
Calculate the mass in grams of calcium bromide the chemist has added to the flask. Round your answer to 3 significant digits.
The volume of the container is 2 ft 3 .Calculate the volume of gas in the container?
Solutions of sodium carbonate and silver nitrate react to form solid silver carbonate and a solution of sodium nitrate. A solution containing 3.60g of sodium carbonate is mixed with one containing 5.14 of silver nitrate.
Find the formula of a compound using stoichiometry and ideal gas equation and Deduce from these data the corresponding equation and write formulas for the oxide and sulfate of M .
determine the number of carbon atoms in the compound. Natural abundances: 12C is 98.93% and 13C is 1.07%
Calculate A for a process in which 0.160 mole of an ideal gas expands from 1.0 L to 3.5 L against a constant pressure
which on of the following is the correct formation reaction that properly defines a delta Hf value
Calculate the theoretical yield of K2C2O4 in grams. If the % yield of the reaction is 82.4 %, what mass of K2C2O4 is isolated
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