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An aluminum tank of volume 0.0300 m3 is filled to the top with mercury at 20.0 °C. The tank is placed inside a chamber with an interior temperature of 70.0 °C.
How many grams of the product formed at the cathode in the electrolysis of an aqueous solution of cupric chloride will be produced by a current of 1.0 A operating for 4.0 hrs?
IN the Determination of phenacetin and acetaminophen by coulumn chromatography,which of the two compounds is likely to seperate first and how does it React with the solvent?
Since you do not know which reaction will be the one to occur, you must base the calculation on whichever of the equations requires more CuSO4 solution.
A chemical engineer studying the properties of fuels placed 1.467 g of a hydrocarbon in the bomb of a calorimeter and filled it with O2 gas (see the figure below).
A gaseous system undergoes a change in temperature and volume. What is the entropy change for a particle in this system if the final number of microstates is 0.458 times that of the initial number o
1 Liter of a solution contains 0.75 moles of acetic acid and 35 grams of sodium acetate. Calculate the concentration of the acetate concentration in the solution and the pH of the solution.
A reaction of 1 liter of Chlorine (Cl2) and 3 liters of fluorine gas (F2) yeilds 2 liters of a gaseous product. All gases are at the same temperature and pressure. What is the formula for the gaseou
If a frying pan needs a Teflon coating that is 1.00 mm thick, and the area to be covered is 36.0 square inches, how many pounds of Teflon are required to coat the pan? Teflon has a density of 2.20
Assuming the steady state approximation is valid for [C], what is the rate of reaction in terms of appearance of D?
The element europium exists in nature as two isotopes: Eu-151 has a mass of 150.9209 amu, and Eu-153 has a mass of 152.9209 amu. The average atomic mass of europium is 151.96 amu.
Morphine (pKb = 5.80) is the active ingredient in opium. It is used as an analgesic that directly acts on the central nervous system to alleviate pain.
What is the reaction when elemental Magnesium and elemental copper are placed in an aqueous solution of copper sulfate? Why does the water turn green, and why does green stuff attach to the Magnesi
A mixture of barium and silver is to be analyzed. The barium component reacts with acid to generate hydrogen gas, while the silver component does not react.
A mixture containing only iron (III) sulfide and iron (III) chloride is reacted with HCl. The iron sulfide reacts according to the balanced equation:
A sample of an alloy containing only zinc and aluminum had a mass of 0.5937g. When this sample was reacted with excess HCl, 315.23ml of hydrogen gas, collected over water at a barometric pressure of
What hydrogen ion concentration should be required to dissolve 0.10M MgF2 if the Ksp for magnesium fluoride is 6.8x10-9 and Ka for HF is 6.5x10-4
The oxidation of the cyanide gives the stable cyanate ion, OCN-. The fumate ion, CNO-, is very unstable, the mercury salt being used in blasting caps.
The human eye is sensitive to electromagnetic waves in a small range of frequencies, extending from 3.90 x 10^14 hz to 7.90 x 10^14hz.
The heat capacity of liquid water is 4.18 j/g C and the heat vaporization is 40.7 kj/mol. How many kilojoules of heat must be provided to convert 1.0 g of liquid water at 67 C into 1.00 g steam at
One compound contains 80.78% C, 13.56% H, and 5.66% OF. A solution of 1.03g of this in 7.49g of benzene freezes at 3.01 degrees C. What are the molecular formula and molar mass?
Three gases (8.00 of methane, , 18.0 of ethane, , and an unknown amount of propane, ) were added to the same 10.0- container. At 23.0 , the total pressure in the container is 3.90 .
Titration of an 360 mg sample of synthesized aspirin with 0.100 M NaOH solution required 20.30mL. what is the EMM of the sample and what is the % ASA?
You have 250mL of a 0.80 M solution of silver nitrate AgNO3 (169.87 g/mol) dissolved in water. How many grams of AgNO3 does the solution have?
Is an electron ever even momentarily found between the first and second energy levels? Explain based on the wave properties of electrons.