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What is the pH of a buffer prepared by mixing 57.4 mL of 0.050 M sodium bicarbonate and 10.2 mL of 0.10 M NaOH. (Carbonic Acid: pKa1 = 6.35, pKa2 = 10.33)
As a food chemist for a major potato chip company, you are responsible for determining the salt content of new potato chips products for the packaging label.
Can glucosamine be drawn as a linear molecule or does it only exist as a ring structure
When 9.6 g of an unknown non-electrolyte is dissolved in 50.0 g of carbon tetrachloride, the boiling point increased to 80.43 degrees C from 76.5 degrees C. If the Kbp of the solvent is 4.95 K/m, calculate the molar mass of the unknown solute.
A steam power plant operates on the cycle of fig. 8.4. For one of the following sets of operating conditions, determine the steam rate, the heat transfer rates in the boiler and condenser and the thermal efficiency of the plant.
The weight of your 1285-kg car is supported equally by its four tires, each inflated to a gauge pressure of 36.0 lb/in2. What is the area of contact each tire makes with the road?
Using the Henderson-Hasselbach equation, calculate the volume of 0.10 M Na2HPO4 and 0.10 M NaH2PO4 that would be required to make 100.0 mL of a 0.10 M (total phosphate concentration i.e. HPO4 + H2PO4) buffer with a pH of 6.91.
Which anions generally do not form precipitates? What are the exceptions?
What volume of ethanol must be diluted with water to prepare 308 mL of 0.700 M solution?The density of ethanol is given as 0.789 g/mL.
What is the enthalpy of this reaction? Assume that no heat is lost to the surroundings or to the coffee cup itself.
Draw the carboxylic acid produced from the acid hydrolysis of butyl acetate (butyl ethanoate)
a solution is made by mixing 20.0 mL 0.4 M NaCH3COO with 30.0 mL 0.4 M CH3COOH, calculate the pH? For acetic acid, Ka = 1.76 x 10-5.
The solubility of the ionic compound M2X3, having a molar mass of 214 g/mol, is 3.18 10-7 g/L. Calculate the Ksp of the compound.
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