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Problem- During the expansion of 0.9704 mole of CO2 gas, the pressure decreased from 2.304 atm to 1.0 atm. What was the DS (J/K) of the process?
Illustrate structures to prove your interpretation.
How many grams of oxygen gas (O2) will it take to oxidize 1 pound of iron metal? Make sure to show the redox reaction and all work.
In dry atmospheric air, the four most abundant components are N2, X = 0.808; O2, X = 0.1915; Ar, X = 9.34x10-5; and CO2, X = 4.066x10-4. Calculate the partial pressure of Ar, in torr, under standard atmospheric conditions.
Problem- A cubic block of phosphorus pentabromide, PBr5, with sides of 3.76cm weights 186.6g. Has a density of what?
The hydrogenation of ethylene is: C2H4(g) + H2(g)-----> C2H6(g). Calculate the change in enthalpy of Hydrogenation from 298 K to 398 K. The Cp values are C2H4: 43.6 J/K mol and C2H6: 52.7 J/K mol
What is the emprical formulae of the compound whose composition by mass is 1.32g of carbon dioxide contain 0.36g of carbon.
pH of 20.0 mL of 0.10M acetic acid/sodium acetate buffer before and after the addition of 2.0 mL of 0.10 M NaOH; 2.0 mL 0.10 M HCl
Important information about Nitration, Explain why nitration of 1,4-dichloro-benzene yields the mononitro derivative while N,N'-diacetyl-1,4-phenylenediamine forms
A solution containing copper(I), nickel, and zinc cyanide complexes was electrolyzed, and a deposit of .175 grams was obtained. The deposit contained 72.8 % Cu,4.30%Ni, and 22.9 % Zn. No other element or compund was released.
If .020 mol of NaOH were added to .500L of a sodium acetate-acetic acid buffer that contained .10M NaC2H3O2 and .15 M HC2H3O2 , by how many pH units would the pH of the buffer change
a 265- flask contains pure helium at a pressure of 761 . a second flask with a volume of 490 contains pure argon at a
calculate the ph of a solution prepared by mixing 250. ml of 0.174 m aqueous hf density 1.10 gml with 38.7 g of an
Calculate the energy emitted by an electron when it drops from energy level 4 down
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