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Determine the percentage ionization of 0.0075M butanoic acid.(Ka=0.000015) and also determine the percentage ionization of 0.0075 M butanoic acid which is also 0.050 M in sodium butanoate.
Assume that the specific heat of the rocks is 0.082 J/ g-K Large beds of rocks are used in some solar heated homes to store heat.
Student B's calibration graph showed that his difference increased regularly throughout the burette (i.e. he got +0.2 for 20 mL and +0.1 for 10 mL apparent and soon). Discuss why this might be so?
Suppose a student decided to speed up the laboratory. He decided not to dry his glassware throughout the calibration lab. Instead, he shook leftover water out of his Erlenmeyer flask by wr
Creatinine is a protein released into the blood which is produced by the muscle. A sample which is having 1 g of creatinine is dissolved in the enough water to build the 1L of solution at the temper
Explain how might a compound of stoichiometry Cu1.77S come about when the common oxidation states of copper are +1 an +2.Discuss in detail.
Calculate a value for the atomic radius of gallium. Gallium crystalizes in a simple cubic lattice., when the density of gallium is 5.904g/cm3.
The observed unit cell length is 4.070 if Gold crystallizes in a face-centered cubic (fcc) arrangement. Determine the radius of a gold atom.
An ideal gas is confined to one side of a rigid, insulated container divided into the equal volumes by a partition. The following data are known for the initial state of the gas: P1 =300kPa, T1=380K
Assume that the air is four-fifths nitrogen and one-fifth oxygen, and that the temperature did not change, by what percent has the volume of the helium-filled balloon decreased?
Calculate the maximum number of electrons that can be found in each of the following sub shells. 1s, 2f, 4s, 5p and 2 p. Discuss in details.
For use in titrations a student prepared the 1.00 L of a solution of NaOH. The solution was standardized by titrating a 0.8033 g sample of potassium hydrogen phthalate (KHC8H4O4).
Determine the normality of a solution that was prepared by dissolving the 26.4 g of barium hydroxide in the enough water to make the 1370.0 mL of solution.
Identify the percentage by which the benzene is fed in excess, the fractional yield of monochloro benzene, the fractional conversion of benzene, and the mass ratio of the gas feed to the liquid feed
Determine the molecular weight of a small protein if a 0.20-gsample dissolved in the 100 mL of water has an osmotic pressure of9.8 mmHg at the 25.0 degrees Celsius.
Suppose that you were aware of your mistake and you knew the volume you had actually used. Suppose you made up an equilibrium mixture using 2.1 cm3of one reagent, rather than 2cm3 as directed i
Calculate the concentration in kilograms of silicon per cubic meter of alloy if the concentration of silicon in an iron-silicon alley is 0.25 wt%.
Briefly discuss how the Mg to O ratio would have been affected if you had failed to convert all of the Mg3N2 present OT magnesium oxide.
Explain how the moisture affects the percentage calculation. In the dehydration of hydrated salt, the sample was slightly moist because of high humidity.
Determine the molarity of an AgNO3 solution if the 53.7 mL of the KCl solution react exactly with the 46.0 mL of the AgNO3solution? A solution is prepared by placing the 26.7 g of KCl in
Calculate the effect on the boiling point of a solution (e.g., H2O) which is produced by a soluble nonvolatile substance (e.g. NaCl)? Determine the effect of an insoluble substance such as
Can toluene and cyclohexane be separated if the external pressure is 350 torr instead of the 760 torr? Explain what effect does the reduction of atmospheric pressure have on the boiling poi
Discuss what would be the purpose of using a copper sponge in a fractional distillation? And why the fractional distillation is better than a simple distillation?
A solution is prepared in a 0.900 L volumetric flask by placing 16.5 g of KCl and adding water to dissolve the solid, then filling the flask to the mark.
Determine the energy difference among the least stable chair confirmation of trans-1,4-dimethylcyclohexane and the most stable confirmation of cis-1,3-dimethylcyclohexane by using a value of 3.6 kJ