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A galvanic cell is constructed with a silver-silver chloride electrode, and a nickel strip immersed in a beaker containing 1.56 x 10-2 M solution of NiCl2. Determine the balanced cell reaction and c
A solution is prepared by combining .025 mole CaCl2 and .015 mol Pb (NO3)2 and adding water to make 1L of solution. Will a precipitate of PbCl2 form in this solution
Determine the number of bonding electrons and the number of nonbonding electrons in the structure of CS2.
The volume of HI(aq) required to reach the equivalence point : (1c) The pH at the half-neutralization point. (1d)The pH at the equivalence point.
67.0 mL of a 1.80 M solution is diluted to a voume of 218 mL. A 109 mL portion of that solution is diluted using 121 mL of water. What is the final concentration
Aluminum chlorhydrate is added to antiperspirants to stop people from sweating. If this compound contains neutral H2O molecules and Al3+, OH- and Cl- ions, and the formula of this compound is Alx(OH
What is the highest energy transition state for the hydration of 1-methylcyclohexene withpartial bonds
The standard free energy change associated with the dissolution of ammonium nitrate in water is -6.73 kJ/mol at 298.15 K. NH4NO3(s)->NH4NO3(aq) What is the equilibrium constant for the reaction.
Calculate delta rG^o for the reaction below at 25 degrees C. CS2(g) + 3Cl2(g) -> S2Cl2(g) + CCl4(g) given delta rH^o = -231.1 kJ/mol-rxn and delta rS^o = -287.6 J/K*mol-rxn
Consider the reaction: Cu^2+(aq) + 4NH3 (aq) -> Cu(NH3)4^2+(aq) Kf=2.1 x 10^13 If Ksp for Cu(OH)2 is 2.2 x 10^-20, what is the value of the equilibrium constant, K, for the reaction below? Cu(NH3
The Ksp of BaSO4 is is 1.1 x 10^-10 at 25 degrees C. What mass of BaSO4 (molar mass = 233.4 g/mol) will dissolve in 1.0 L of water at 25 degrees C
Find the standard reduction potentials for the following half reactions in acidic solution. E° for MnO4 (aq) + 8 H+ (aq) + 5e^- -> Mn^2+ (aq) + 4 H2O (I)
If a battery is created using zinc and electrodes along with any corresponding ionic solutions what voltage will it produce by itself? note that E for Ag^+ (aq) + e^- ---> Ag (s) is +0.80 v.
The reaction will become more spontaneous. B) The spontaneity of the reaction will not change. C) The reaction will become less spontaneous. D) ?G will decrease. E) K will decrease.
Write the equilibrium constant expression for the reaction : 3A + B <-> 2C 2) Calculate Kc for the above reaction if [A] = 6.1 x 10^(-3) M; [B] = 3.9 x 10^(-1) M; and [C] = 5.0 x 10^(-5) M at
Suppose you have a Mo-W alloy that is 70 wt% W. Describe a process that would allow you to isolate an enriched mixture that is 80 wt% W. What would your yield be for a two-step process
The phase behaviors of Mo-W mixtures and Mo-Si mixtures are markedly different. Give a detailed explanation for why this is.
An unknown solution forms a white precipitate when treated with 6 M HCL. The precipitate is incompletely soluble in hot water but dissolves completely in NH3. What ion(s) are definitely present
How much energy is emitted when electron in hydrogen atom undergoes a transition from n=5 to n=2 level. what is the wavelength of this emission. what is the frequency
At what pH will an aqueous solution of 0.200 M Ni^2+ begin to precipitate as Ni(OH)2 at 25 degrees C? Ksp of Ni(OH)2 is 5.5 x 10^-16 at 25 degrees C.
What is the correct electron configuration for copper Answer a. [Ar]4s23d8 b. [Ar]4s23d9 c. [Ar]4s13d10 d. [Ar]3d10 e. [Ca]3d9
An electron in the n=7 level of the hydrogen atom relaxes to a lower energy level, emitting light of 93.1nm. What is the value of n for the level to which the electron relaxed
Two hydrocarbons A and B each contain six carbon atoms and one C=C. Compound a can exist as both E and Z isomers but compound B cannot . however, both A and B on catalytic hydrogenation give only 3
Consider the filling order for electrons. If an atom has the following electron configuration, where would the next electron be placed? [Ne]3s23px23py2 3pz1 Answer a. 3px b. 3py c. 3pz d. 4s e. 4p3
Which element, indicated by letter on the periodic table above, has a 2+ ion with the electron configuration [Ar]3d10