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Use tabulated half-cell potentials to calculate Delta G(rxn) for each of the following reactions at 25 degrees Celsius.
MnO2(s)+4H(aq)+Cu(s)--->Mn2+(aq)+2H2O(l)+Cu2+(aq)
A 0.050 M H2S solution contains 0.29 M NiCl2 and 0.35 M Hg(NO3)2. What pH is required to precipitate the maximum amount of HgS but none of the NiS. Ksp for NiS is 8*10^-48
Its thermal decomposition can be represented by: 2Al2O3 (s) = 4Al (s) + 3O2 (g) deltaHrxn = 1676 kJ. If aluminum is produced this way, how many grams of aluminum can be formed when 1.000 x 10^6 J of heat is transferred
The rate constant of a first order reaction is 3.46x10 to the -2 at 298K. What is the rate constant at 350K if the activation energy is 50.2 kJ/mol
Find the formal concentration of the acid in each phase when 100 mL of 0.10 M aqueous acid is extracted with 35 mL of octanol at (a) pH 4.00 and (b) pH 9.00.
The heat of fusion of acetic acid is 11.5 kJ/mol. Its melting point is 16.6 C. The change in entropy for the melting of acetic acid in J(mol * K) is
Hypothetical metal M has a molecular weight 171 g/mol and crystallizes in a body-centered cubic array of atoms in which the length of the unit cell's edge is 547.3 pm
Develop a hypothesis relating to the amount of dissolved oxygen measured in the water sample and the number of fish observed in the body of water.
Estimate the approximate concentration of a typical enzyme and the number of the enzyme molecules inside each cell. Make any reasonable assumption that will help you calculate the numbers
Understand how the ability to form hydrogen bonds gives water cohesiveness and how this property is exploited by living things.
calculate what quantity of potassium chlorate that has molecular weight of 122.5 needed to form 33.6 litres of oxygen?
Consider a titration of 24.2 mL of 0.0878M solution of aqueous ammonia [Kb(NH3) = 1.8e-5] with a 0.115M of hydrochloric acid.
two thermometers a and b are wrapped in pieces of gauze. the gauze around thermometer a is moistened with water and the
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