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The molarity of the potassium dichromate is a result of two sequential dilutions. Re- member that you can obtain the dilution factor from the volumes in the dilutions, V2/V1.
To obtain a 0.00650 M K2Cr2O7 solution, a researcher started with 10.0 ml of a concen- trated K2Cr2O7 solution and mixed it with 40.0 ml of deionized water. Then he diluted the obtained solution by a factor of 5. Calculate the molarity of the original concentrated K2Cr2O7 solution used by the researcher.
Which of the following is NOT part of the Kinetic Molecular Theory? A) Gas particles do not repel each other. B) There is a large distance between gas particles as compared to their relative size.
Given 100.0mL of a buffer that is 0.50 M in HOCl and 0.40 M in NaOCl, what is the pH after 10.0mL of 1.0 M NaOH has been added. (Ka for HOCl = 3.5 x 10^-8)
What is the boiling point of a solution made using 813g of sucrose, C12H22O11, in 0.275 kg of water,H2O.
A Power plant is the main point source of SO2 emissions for a 25 km2 area. Estimate the steady-state concentration of SO2 for this area from this point source given the following temperature data. Windspeed= 5km/hr.
An ideal gas at 300 K has an initial pressure of 15 bar and is allowed to expand isothermally to a pressure of 1 bar. Calculate: the maximum work that can be obtained from the expansion
hydrazine n2h4 can be made on paper by reaction of molecular nitrogen and molecular hydrogen2 h 2 g n 2 g --gt n 2
Which of the following underlined items is not an intensive property (a) A chemical reaction reqyuires 3.00g of oxygen (b) Solid copper hydroxide is blue colored (c) the density of helium at 25degree celsius
Write a balanced chemical equation when Magnesium metal burns in oxygen to form magnesium oxide, MgO
What is the concentration of the compound in a solution whose absorbance at 291 nm is A = 0.095 with a sample pathlength of 1.00 cm?
The ClO2 molecule was involved in a chemical reaction in which it underwent oxidation. Based on the change in oxidation numbers, which of the species listed below is a possible product of the reaction
In extracting an organic compound from an aqueous solutin, what is the practical advantage to having the organic solvent be more dense
For a reaction that follows the general rate law, Rate= k[A] [B]^2, what will happen to the rate of reaction if the concentration of B is increased by a factor of 3.00?
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