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Find the pH during the titration of 20.00 mL of .1000 M butanoic acid CH3CH2CH2COOH (kA = 1.54E-5), with .1000 M NaOh solution after the following additions of titrant. a. 20.40 mL b. 26.00 mL
A sample of an unknown metal has a mass of 35.4 grams and a volume of 3.11 centimeter cube. calculate the density.
Draw a schematic of the flow. Clearly define and label the axes and any variables to be used. Indicate on the schematic the fluid on top and bottom of the slit.
The mass density of the resulting solution was 1040 kg/m^3. Calculate themolarity and molarity of sucrose in the solution.
Find out the amount of energy released by this process of fission of a single U 235 atom and expree your answer in joules?
Sketch a cube. How many vertices does it have? How many edges? How many faces? Mark four vertices of the cube that are also vertices of a regular tetrahedron.
To prevent the presence of air, noble gases are placed over highly reactive chemicals to act as inert "blanketing" gases. A chemical engineer places a mixture of noble gases consisting
Calculate the concentration of ethanol in wine in terms of mass percent and molality. mass percent: (answer in percent) molality
A student wanted to determine the molar concentration of acetic acid in a commercial vinegar sample. He used a volumetric pipet to deliver 3.00 mL of vinegar to an Erlenmeyer flask, added about 30 mL of water and 3 drops of phenolphthalein indicat..
A 0.4000M solution of nitric acid is used to titrate 50.00mL of 0.237M barium hydroxide. (Assume that volumes are additive). Write a balanced net ionic equation for the reaction that takes place during titration.
The vapor pressure and enthalpy of vaporization of an unknown substance are measured to be 204.2 torr and 28.8 kJ/mol, respectively at room temperature (298.15 K). Estimate the normal boiling point of the substance at an atmospheric pressure of 76..
In most amines, the nitrogen atom is hybridized, with a pyramidal structure and bond angles close to 109 . In urea, both nitrogen atoms are found to be planar
What is the unknown stubstance that is insoluable in water, soluable in cyclohexane and alcohol and has a boiling point of 58 C at 670 mm hg?
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