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80.0 of is initially at room temperature (22.0). A chilled steel rod at 2.0 is placed in the water. If the final temperature of the system is 21.2, what is the mass of the steel bar?Specific heat of water = 4.18Specific heat of steel = 0.452
The Henry's Law constant (Kh) for O2 in water at 20 degrees C is 1.28e^-3 mol/L*atm. How many grams of O2 will dissolve in 2.00L of H2O that is in contact with pure O2 at 1.00 atm?
What is the probability of populating the first excited vibrational state (n = 1) at 298 K? Does isotopic substitution affect the probability? Would the intensity of absorption peaks be affected by isotopic substitution?
What is the rate constant of a first-order reaction that takes 215 for the reactant concentration to drop to half of its initial value?
What is the potassium concentration of a solution formed by combining 50.0 mL of 0.400 M KCl with 50.0 mL of: a) 0.100 M PdCl6, b) 0.800 M PdCl6 , c) water, d) 0.200 M PdCl6 (If The Ksp for K2PdCl6 = 6 x 10^-10)
What is the silver ion concentration in a solution prepared by mixing 357 mL of 0.392 M silver nitrate with 469 mL of 0.504 M sodium phosphate?
A tank contains a mixture of 3.0 mol N2, 2.0 mol O2, and 1.0 mol CO2 at 25 degree Celcius and a total pressure at 10.0 atm. Calculate the partial pressure(in torr) of each gas in the mixture.
stationary phase thickness on the inner wall of 0.76 ?m passes unretained solute through in 65 s. A particular solute has a retention time of 403 s. What is the partition coefficient for this solute?
give full mechanism: show the reaction of ethyl propionate with sodium ethoxide followed by cold aqueous acid work up
A bottle of wine consists of an 11 weight percent solution of ethanol (C2H5OH) in water. If the bottle of wine is chilled to -20oC, will the solution begin to freeze? Kfp for water is 01.86 oC?m-1
A solution is made by mixing 8.00 (millimoles) of and 1.00 of the strong base. What is the resulting pH?
what volume of 0.150 M KCl solution is required to react completely with 0.150 L of a 0.175 M Pb(NO3)2 solution according to the chemical reaction
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