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What is the value of the reaction quotient, Q, for the cell that is constructed from the two half-reactions
Zn2+ + 2e- = Zn, Eo = - 0.76 V
Ag+ + e- = Ag, Eo = 0.80 V
when the Zn2+ concentration is 0.0100 M and the Ag+ concentration is 1.25 M?
A 1.25 x 10-2
B 8.00 x 10-3
C 125
D 6.40 x 10-3
E 156
A 86 gram solution of silver nitrate contains 14 grams of AgNO3. What is the percent by mass of silver nitrate in this solution.
A bag of potato chips contains 580 mL of air at 25°C and a pressure of 755 mm Hg. Assuming the bag does not break, what will be its volume at the top of a mountain
Complete and balance the following equation, and identify the oxidizing and reducing agent.(Write down each of the half reactions) Cr2O7^2-(aq)+Fe^2+(aq)-->Cr^3+(aq)+Fe^3+(aq) (acidic)
If 4.00 ml of vinegar needs 42.0ml of 0.110M NaOH to reach the equivalence point in a titration, how many grams of acetic acid are in a 1.10qt sample of this vinegar?
What is the rate constant of a first-order reaction that takes 288 seconds for the reactant concentration to drop to half of its initial value?
Write the chemical equation for the equilibrium that corresponds to Ka. By using the value of Ka, calculate ?G° for the dissociation of cyanic acid in aqueous solution
Explain why selectivity in isocratic HPLC system ideally should not depend on eluent composition. (Use thermodynamic derivation to support your explanation).
Magnesium reacts with iron(III) chloride to form magnesium chloride and iron. 3Mg(s) + 2FeCl3(s) => 3MgCl2(s) + 2Fe(s)
If the pH is buffered at 8.2 (as is historically typical for the ocean), what is the molar solubility of CaCO3? F) If the pH is buffered at 7.5, what is the molar solubility of CaCO3?
An aqueous solution of nitrous acid (HNO2) has a ?G= 19.1 kJ. What is the pH when [NO2-]=1.00 M, [HNO2]=1.00 M, and the ?G=0?
A 6 cm string is fastened at both sides is plucked. What is the wavelength of the n = 3 standing wave? How many nodes does it contain.
Draw (in increasing energy ordering) 3 different alkenes derived from the dehydration of 1,2-dimethylcyclohexanol
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