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A diatomic ideal gas at an initial temperature of 292 K expands adiabatically so that its volume increases by a factor of 3.92. If there are 2.34 mol of gas, what is the work done by the gas during this expansion?
For a certain reaction ?Gorxn = 27.9 kJ/mol. What is the equilibrium constant at 225oC? Remember to convert kJ to J to have consistent units and the temperature to K.
A current of 5.59 A is passed through a Ni(NO3)2 solution for 1.50 hours. How much nickel is plated out of the solution?
Which of the subsequent pairs of compounds would be most easily separated by thin layer chromatography: n-octyl alcohol and1-octene, hexadecane and octadecane or chlorobenzene and bromobenzene
Zinc reacts with hydrocholric acid according to the reaction equation. Zn(s) + 2HCl(aq) arrow ZnCl2(aq) + H2(g) How many milliliters of 2.50 M HCl(aq) are required to react with 7.5 g of Zn(s)
1 calculate the half-life in s of a first-order reaction ifthe concentration of the reactant is 0.0782 m 25.2 s after
Explain briefly that how HCl could test for limestone's presence , use the balanced chemical equation for this and then describe specific reaction that takes place?
As mentioned before, our asteroid is in the shape of a sphere and has a mass of 1000 kilograms. Determine the density (in grams per cubic centimeter) of this asteroid if its diameter is known to be 1.2 meters. Useful information: 1 kg = 1000 g, 1 m =..
Calculate or qualitatively correct titration curves for the acid-base titrations - report the %w/w protein in the sample of cereal
A 100.0ml of sample of drinking water was buffered at PH 10.0 and after the addition of Calmagite indicator, required 35.41ml of 4.652X10^-3 m EDTA to reach the end point for the titration. Calculate the total hardness of the water in ppm of CaCO3
how much heat energy is required to raise the temperature of 0.365 of copper from 23.0 to 60.0 ? the specific heat of
What kind of lipid forms when a glycerol combines with fatty acids through dehydration synthesis?
If all of the electron groups around a single central atom are bonding, and the same outer atom is bonded to the central atom in each case, is the molecule polar, nonpolar, or does it depend on the identity of the outer atom?
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