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How much heat must be supplied at constant pressure of 30 bar to 4 kg of substance called H2O to transfer it from "saturated liquid" to a) 2-phase substance of quality equal 60% b) "saturate vapor". What are the pressures, temperatures, enthalpies, and mass densities of the substance at the beginnings and ends of the processes?
When 1 gram of nitroglycern, C3H5(NO3)3, decomposes to form nitrogen gas, oxygen gas, gaseous carbon dioxide, and liquid water, 1.9 kcal of heat is evolved. How much heat is evolved per mole of gas formed in the decomposition of nitroglycerine?
Calculate the solubility of Ba(IO3)2 in 0.033 M solution of Mg(IO3)2 considering both the electolyte and common ion effects. Ba(IO3)2 Ksp
A graduated cylinder contains 25.0 of water. What is the new water level after 34.2 of silver metal with a density of 10.5 is submerged in the water.
A gas expands and does P-V work on the surroundings equal to 323 J. At the same time, it absorbs 145 J of heat from the surroundings.
Treatment of (S)-( )-5-methyl-2-cyclohexenone with lithium dimethylcuprate gives, after protonolysis, a good yield of a mixture containing mostly a dextrorotatory ketone A and a trace of an optically inactive isomer B
If 4.00 g of the unknown compound contained 0.133 mol of and 0.267 mol of H , how many moles of oxygen, O , were in the sample?
The two ions are mixed in a solution and you need to pick a chemical to add that would allow you to selectively remove one of them. Briefly describe the process you would use to separate the two ions.
A 125 g aluminum block at an initial temperature of 95°C is dropped into a styrofoam flask containing 150 mL of water at 20°C. What is the final temperature?
Write chemical equations for the reaction of calcium with the following substances, making sure that the numbers and kinds of atoms are the same on both sides of the equations
What is the enthalpy of this reaction? Assume that no heat is lost to the surroundings or to the coffee cup itself.
What mass of glucose C6H12O6, would be required to prepare 5.000 X 10^3 L of a 0.215 M solution.
A sample of gas occupies a volume of 50.4 mL. As it expands, it does 125.5 J of work on its surroundings at a constant pressure
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