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A voltaic cell consists of a Zn/Zn^2 + half-cell and a Ni/Ni^2 +half-cell at 25C. The initial concentrations of Ni^2 + and Zn^2 + are 1.70 M and 0.100 M, respectively.
initial cell potential is 0.57 V.
Will changing the temperature of the surroundings favor spontaneity, nonspontaneity, or have little effect? deltaH = -30.4 kJ/mol
Describe how you will separate the following mixture of ions in solution. Include an explanation/rationale of the reagent used.
What mass of sodium azide is required to provide the nitrogen needed to inflate a 47.0 L bag to a pressure of 1.2 atm at 47 C.
Write a mechanism for the base-catalyzed hydrolysis of methyl salicylate. 2.) Devise another route by which methyl salicylate can be converted to acetylsalicylic acid
The ionization constant, Ka, for benzoic acid, HC7H5O2, is 6.28 × 10-5. What is the pH of a 0.15 molar solution of this acid
nitrogen and hydrogen gases react to form ammonia gas as followsn2g3h2g--gt2nh3gat a certain temperature and pressure
Describe the basic steps involved in gravimetric analysis. How does this procedure help us determine the identity of a compound or the purity of a compound if its formula is known.
a 25.0 ml sample of 0.35m hcooh ka1.77x10-4 is titrated with 0.20 m koh. what is the ph of the solution after 25.0 ml
What is the lewis structure for NBr3. How many electron pairs in the central atom of NBr3. How many bonding electrons pairs of the central atom of NBr3
What is the boiling point of the automobile radiator fluid prepared by mixing 1.00 L of ethylene glycol (HOCH2CH2OH, density - 1.114 g/mL) with 1.16 L of water (density = 1.000 g/mL)?
Using henderson hasselbalch calculate the ph of .5 L of 2.0M solution of nitrous acid, HNO2 that also contains 140g of nano2 (MM=70g/mol)
How much heat is required to convert 25.0g ethanol at 25C to the vapor phase at 78C? How much to convert 5.00 L?
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