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A closed vessel contains an inert gas A at 760 mmHg and60°C. What is the total pressure in millimeters of mercury inside the vessel after a few drops of liquid B are injected and aphase equilibr
A staff chemists attempts to prepare 3,3-dimethyl-1-butyne. Using the above chemicals, our chemist obtains tert-butyl chloride and acetylide ion, and then adds tert-butyl chloride to the solution o
Sodium flouride, NaF, is a basic salt. Write the chemical equation that describes how the salt breaks up into its ions. Write the chemical equation that describes how one of the ions behaves as abas
Draw the structures of the 4 branced,constitutional isomers of n-hexane and circle the ones that should be chiral ( that is draw circles around the structures that cannot be super-imposed on their m
Magnesium burns in air to produce a bright light and is often used in fire works displays. The combustion of magnesium follows the thermo chemical equation
Fe2O3 + 2Al - 2Fe + Al2O3If you start with 50.0g of Iron (iii) oxide and 25.0 g ofaluminum in the above problem, what is the limiting reagent?
The normal boiling point for a solutionof n-hexane (C6H14, M = 86.18 g/mol) and n-octane (C8H18, M =114.23 g/mol) is T = 93.7 °C. The vapor pressures for these two compounds at this temperature
What is the ratio of the conjugate base concentration to the acid concentration, that is, [B- ]/[HB] when the indicator switches to the acidic color?
What a friedel crafts acylationmechanism would look like using acetic anhydride as the source of the acyl cation?
How does a carbocation rearrangment result in a 6 member edring collapsing into a 5 membered ring in a reaction such as anelimination with alcohols?
A careful search of various old solutions sitting around inyour laboratory reveals a 2.870 L solution containing 0.03824 MHBu, where HBu stands for the weak bucolic acid.
In a reaction, 2.04 g of vanadium is combined with 1.93 g of sulfur to give a pure compound. What is the empirical formula of the compound formed?
Citric acid, a flavoring agent in many carbonated beverages, has a molecular mass of 192 and a percent of composition by mass of 37.50% C, 4.2% H, and 8.29% O. Determine the molecular formula of cit
A student carefully diluted 25.0 mL of 6 M NaOH solutionin 475 mL if distilled water. Calculate the molarity of thediluted solution of base. Also, explain why this diluted NaOHsolution can not be us
To bring the solution to a pH of 7.35 , how much 0.100 M KOH or0.100 M HCl (assume 100% dissociation for either) would you have to add if the initial pH of the solution was 5.36? How much would you
A student titrates 50mL apple juice and reports the following in the titration to the phenolphthalein end point with .1011M NaOH
Two gases are contained in gas bulbs connected by a valve. Gas A ispresent in a 45 L bulb at a pressure of 388 torr. Gas B exerts apressure of 681 torr in a 83 L bulb. What is the partial pressure o
A solid weak acid is weighed, dissolved in water and dilutedto exactly 50.0 ml.25.00ml of the solution is taken out and is titrated to aneutral endpoint with 0.10 M NaOH.
An element is diamagnetic if it has no unpaired electrons. An element is paramagnetic if it has unpaired electrons. If sulfur has unpaired electrons in the last p orbital (1s22s2 2p6 3s2&n
A compound with a formula mass of 292.16 was dissolved in solventin a 5 mL volumentric flask and diluted to the mark. A 1.00 mL aliquot was withdrwam, placed in a 10 mL volumetric flask and diluted
A mixed aqueous solution of HCl and phosphorous acid (H3PO3; Ka1 = 3.00×10-2; Ka2 = 1.66×10-7) is titrated with 0.1000-M NaOH. The first end point (cresol purple indicator) is reached af
A bird is flying around the world at a rate of 12.2ft/sec. How many days will it take to complete its journey?(circumference of earth =25,000miles
What are the first two ionization energies of calcium and zinc? Based on the values, which metal would you expect to be most active and why?
Glucose is present in bacterial cells at a concentration ofabout 1 mM. What is the concentration of glucose expressed asmg/mL? How many molecules of glucose are contained in a typical E.coli cell (a
A sample of a compound contains 0.90 g of element A and 0.60 g ofelement B. If the atomic weight of A is 60 g/mole and that of B is40 g/mole, then what is the empirical formula for this compound?