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(a) Under what circumstances is the Nernst equation applicable?
b) What is the numerical value of the reaction quotient, Q, under standard conditions?
(c)What happens to the emf of a cell if the concentrations of the reactants are increased?
A reaction of the form aA---->Products gives a plot of ln[A] vs time (in seconds) which is a straight line with a slope of -7.35e-3. Assuming [A]0=0.0100M,
a solution is prepared by dissolving 15.0g of nh3 in 250g of water. the density of resulting solution is 0.974gml.
The first-order rate constant for the decomposition of N2O5, 2N2O5 --> 4NO2 + O2 at 70 degrees C is 6.82 * 10 ^-3 . Suppose we start with 2.90×10?2 of in a volume of 1.7 L. A)
A 24.7 g sample of pure iron at 61°C is dropped into 99 g of water at 25°C. What is the final temperature of the water-iron mixture?
Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.150 M HClO(aq) with 0.150 M KOH(aq). The ionization constant for HClO is 4.0*10^-8
Calculate the acid dissociation constant Ka, for the ammonium ion (NH^4+); Kb for NH3 is 1.8 x 10^-5
If a cord of wood is a stack of wood that measures 4.0ft x 4.0ft x 8.0ft. Explain what is the volume of this stack of wood in cubic centimeters
Write the structure of the carbocation formed by the protonation of C-2 or C-3 to verify that it is not allylic and therefore not as stable as the one formed by the protonation of C-1 or C-4.
The molar mass of a volatile substance was determined by the Dumas-bulb method. The unknown vapor had a mass of 0.852 g, the volume of the bulb was 356 cm3, pressure 755 torr, and the temperature 88°C. Calculate the molar mass of the unknown vapor..
Problem- When doing a "Molar volume of oxygen gas" lab, Explain why you don't collect the oxygen gas in the buret the first time you start heating the sample.
Acidic and basic solutions have distinct physical and chemical properties. For chemistry courses, especially those with a laboratory component, it is important that you be able to distinguish these properties
It takes 45.0 to raise the temperature of an 8.00 piece of unknown metal from 13.0 to 24.5. What is the specific heat for the metal.
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