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Nickel is a transition element and has a variable valence.Using a nickel salt, 2 F (faradays) plate out 39.2 g of nickel. What ions are in the solution of this salt?Atomic molar masss Ni = 5
Determine the mole fractions and partial pressures ofCO2, Ch4 and He in a sample of gas thatcontains 0.250 mole of CO2, 1.29 moles of CH4, and 3.51 moles of He, and in which the totalpressure is
The specific heat of copper is 0.385J/g.K. What quantity of heat is required to heat 168g of copper from -12.2 to +25.6 degrees Celcius?
A particular voltaic cell operates on the reaction below, giving an emf of 0.853 V. Calculate the maximum electrical work generated when 14.0 g of zinc metal is consumed.Zn(s) + CI2(g)→ Zn2+(aq
In a Fischer esterification why do we have to neutralize the sulfuric acid (sulfuric acid serves as our acid catalyst) before the reaction is worked up?
A flexible vessel contains 1.5 L of gas at sealevel, where the pressure is 1.0 atm. What will the volume be when the pressure is 0.85 atm, the temperature remaining constant?
The solubility of silver oxalate,Ag2C2O4 in pure water is 2.06 x10-4 moles per liter. Calculate the value of Ksp for silver oxalate from this data.
The solubility product for iron (III) hydroxide at 22°C is6.0 x 10-38. What mass of this compound will dissolve in100 mL of 0.20 M sodium hydroxide, assuming no complex formation?
Calculate the grams of precipitate fromed from the addition of 1.00000 ml of 0.001000 M Silver 1 Nitrate with 1.00000 ml of .0010000 M Sodium Chloride. What will be the ppm of Ag+1?
When 0.72 g of acetic acid is dissolved in 25.0 gof benzene, the freezing point of the solution is4.25°C.a. Calculate the apparent molecular weight of acetic acid in benzene.
On checking your inventory, you find that the only organic chemicalsthat you have are acytylene, propyne, idomethane, 2-bromopropaneand 1,1-dichloro-3-methylbutane.
When 0.593 g of an unknown solute is dissolved in14.9 g of water, the freezing point is depressed by1.74°C. Calculate the molecular weight of the unknown solute, assuming that it is a non electrol
Calculate ΔG° at 25°C for the followingreaction.BaSO4(s) -Ba2+(aq) +SO42-(aq) What is the value of the solubility product constant,Ksp, for this reaction at 25°C?
What is the maximum amount of P2O5 that can theoretically be made from 272g of O2 and excess phosphorus? Express your answer numerically in moles.
1.34g of sodium carbonate isadded to excess 0.125mol L-1 hydrochloric acid solution.What volume of hydrochloric acid would be needed to react completely with the sodium carbonate?
At a temperature for which the solubility product of calciumcarbonate is 4.7 x 10-9, what mass of the salt will dissolve in 100 mL of water?
The following eq. represents the complete combustion ofethane: 2C2H6(g) + 7O2(g) ---->4CO2(g) + 6H2O(g)At the same temperature and pressure, what is the maximum volume in liters of carbon dioxide
What is the partial pressure of oxygen in a container that contains 2.0 mol of oxygen, 3.0 mol of nitrogen, and 1.0 molof carbon dioxide when the total pressure is 900 mmHg?
IN relation to my previous question about cationic polymerization,I'd like to ask another question. (It's a long question and I'msolving it but there are glitches, and there are some things Idon't g
What is the maximum concentration of chloride ions in asolution that contains 0.100 M Pb. The Ksp for lead (II)chloride is 1.0 x 10-4.
A sample of Polystyrene that is can be prepared by heating styrene with tribromobenzoyl peroxide in the absence of air has this empirical formula ( Br3C6H3(C8H8) n ) where n canvary from sample to s
What is the final temperature of the water? Assume that no heat is lost to or gainedfrom the surroundings. Specific heat capacity of nickel 0.444J/(g.K).
A system initially has an internal energy U of 38 J. It undergoes a process during which it absorbs 27 J of energy andhas 99 J of work done on it by its surroundings. What is the final energy of the
What are the steps and mechanisms for cationic polymerization involving AlBr3 as initiator and C(CH3)3Br as co-initiator?
The decomposition of dinitrogen pentaoxide has an activation energy of 102 kJ/mol and delta H rxn = +55 kJ/mol. What is the activation energy for the reverse reaction?