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A Carnot cycle uses 3.00 mol of a monatomic perfect gas as the working substance from an initial state of 5.00 atm and 500K. ). This expansion is followed by an isothermal compression (3
Water is added to 4.267 grams of UF6. The only products are 3.730 grams of solid containing only oxygen, uranium, and the fluorine and 0.970 gram of a gas.
Aluminum does not have magnetic properties and heating up the two will destroy the plastic. So, is it possible to separate the plastic and aluminum without picking the pieces out by hand?
Determine the maximum theoretical percent recovery from the re-crystallization of 1.00g of benzoic acid from the 15 ml of water, assuming the solution is filtered at 25 degrees C.
Determine the minimum volume of the acid solution needed to react with all of the iron? Iron reacts with HCl solution to give Fe2+ ions and H2 gas. Suppose that 7.1 g of iron are to be disso
Briefly explain how you could use thin layer chromatography to decide when the reaction was complete. Suppose you prepared benzhydrol by the reduction of benzophenone with sodium borohydride.
What is the molar mass of the polypeptide when a 0.4 g sample of a polypeptide dissolved in the 1 L of an aqueous solution at 27 degree C has an osmotic pressure of 2.74 Torr.
If the rock contained no carbonate other than CaCO3, what was the percent of CaCO3 by mass in the limestone? When a 1.25-gram sample of limestone was dissolved in acid, 0.44 gram of CO2 was
It is suggested that SO2 (molar mass 64grams), which contributes to acid rain, could be removed from a stream of waste gases by bubbling the gases through the 0.25-molar KOH, there by producing
Explain what would be the atomic mass of Cl? Chlorine has two stable isotopes of mass 34.97 u and 36.97 u. Suppose the percent abundance of the lighter isotope were 62.41%.
When aluminum is added to a strong acid, the metal is oxidized to aluminum (III) ions by hydrogen gas and H+ is formed. If 10.0 g of aluminum is added to the 50.0 mL of 0.450 M HCl, determine t
Determine the numbers of different spectator ions are present in the metathesis reaction in which the silver carbonate reacts with the nitric acid to produce the silver(I) nitrate?
Explain observation (HCl gas is soluble in water), when a small amount of water is introduced into the flask by squeezing the bulb of the medicine dropper, water is squirted upward out of the long
Combustion of a 2.37 g sample of a compound C, H, O with excess oxygen gave 0.0961 mol of H2O and 0.0961 mol of CO2. Determine the simplest formula of the compound?
Calculate the hydrogen ion content of the tomato juice. Using this hydrogen ion content demonstrate how to find out the ph of the substance by using the formula.
Determine the entropy change. Explain what would be the value of delta S if the heating were carried out irreversibly? A quantity of 6.0 moles of an ideal gas is reversibly heated at consta
An insoluble precipitate of silver chloride forms when a solution of potassium chloride is added to a solution of silver nitrate. The formula of a compound can be determined if the ratio of the numb
In an experiment, 24.2 mL of 0.12 M silver nitrate needed 9.70 mL of 0.15 M sodium sulfate to precipitate all of the silver. Silver produces an insoluble sulfate. Determine the simplest formu
A baseball leaves a pitcher's hand horizontally at a speed of134 km/h and the distance to the batter is 18.3 m. Explain how long does the ball take to travel the first half of that distance?
Magnesium metal reacts with HCl solution, liberating H2 gas and generating Mg2+ cations in solution. A 1.795-gsample of Mg metal is added to 50.0 mL of a 4.00 M HCl solution, and the reaction g
Determine the maximum number of electrons in an atom that can have these quantum numbers, or sets of quantum numbers? And how do you solve for it?
Calculate the minimum temperature at which magnetite can be reduced to iron by the graphite: Fe3O4(s) + 2C(s) -> 2CO2(g) +3Fe(s); delta Sr° = +351.44 J/K-mol;
Explain why is the trans isomer exclusively converted to the cis isomer during the short reaction periods and not vicecersa? Is it possible, under these conditions, that the trans and cis isomers ar
The residual gases occupied 137. 5 cm^3 and the volume was reduce by a 100 cm^3 on exposure of the gases through KOH solution and the remaining gas was oxygen.
What is the density of the carbon nucleus? The volume of the nucleus of carbon atom is about 9.9 x 10-39 mL. The molar mass of the carbon is 12.00 g mol-1.