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Calculate the plate height (H) for a 16 cm-long column with a stationary phase particle diameter of 6.0 ?m.
What is the pH of a buffer that consists of 0.20 M NaH2PO4 and 0.40 M Na2HPO4? Ka = 6.2 × 10-8
The thermostat in a refrigeraor filled with cans of soft drinks malfunctions and the temperature drops to below 0 degree Celsius. The contents of the cans of diet sodas freeze, rupturing many of the cans.
The value of Ka for monochloroacetic acid is 1.35 multiplied by 10-3. Calculate the pH of a 0.24 M solution of monochloroacetic acid.
calculate the molar concentration and the molarity of a sulfuric acid solution of density 1.198 g/mol,
Ethanethiol (C2H6S) is a compound with a disagreeable odor that can be used to impart an odor to natural gas. When ethanethiol is burned, the sulfur reacts with oxygen to form SO2
Explain how you would prepare each of the following compounds from benzene: a. phenol b. o-ethyltoulene c. 3-chloroaniline d. p-nitrobenzoic acid
Important information about Identifying unknown substances, Compound A (C7H14O) burned with a yellow, nonsooty flame and did not decolorize a bromine-methylene chloride solution. It did give a positive 2,4-dinitrophenylhydrazine test
190 mL of an HCl solution with pH of 3.60 is added to 200 mL of an HNO3 solution. The resulting pH is 1.40. What was the pH of the original HNO3 solution?
The syringe used in this experiment is calibrated to 60 mL. However, there is a 'dead volume' at the needle end of the syringe that is uncalibrated. This volume equals 1.20 mL. Bearing in mind that the syringe is upside down
The vapor pressure of dichloromethane,CH_2Cl_2, at 0 degrees C is 134 mmHg. The normal boiling point of dichloromethane is 40. degrees C. Calculate its molar heat of vaporization.
determine the freezing point of this solution If 18.0 grams of a nonelectrolyte that has molar mass = 44.2 g/mol are combined with 110.0 grams of the solvent,?
petit discovered the empirical rule that the specific heat times the atomic weight of many solid elements is a constant: Using this rule, calculate the specific heat of copper and platinum.
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