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Show, with the aid of a form of the Nernst equation that when using a pH sensitive glass electrode and reference electrode that the measured potential is proportional to pH.
Consider the titration of 100.0 mL of 0.100 M NaOH with 1.00 M HBr. Find the pH at the following volumes of acid added Va= 0, 1, 5, 9, 9.9, 10, 10.1, and 12 mL
During an experiment, a student adds 0.339 g of calcium metal to 100.0 mL of 2.05 M HCl. The student observes a temperature increase of 11.0 °C for the solution.
What is the cell potential for the reaction Mg (s)+ Fe2+(aq)=> Mg2+(aq)+ Fe (s) at 79 C when Fe 2+= 3.30 M and Mg2+= 0.310 it M.
Diethyl amine density (1.0475 g/mL) Diethyl amine MW 73 Diethyl ether density (0.714 g/mL) Hint: Consider at which temperature the reaction is run. Which of the boiling points and melting points might come into play?
How many millilitres of 0.200 M HCl must be added to 50.0 mL of a 0.200 M solution of NH3 in order to prepare a buffer that has a pH of 8.60? Kb of NH3 = 1.8 x 10-5.
If a segment of DNA consists of 5'-TCTAGC-3', the nucleotide order in the complementary mRNA strand (written in 5' to 3') would be:
A backpacker wants to carry enough fuel to heat 2.2 kg of water from 30 C degree to 100.0 C degree. If the fuel he carries produces 36 kJ of heat per gram when it burns
If you find that the standard Gibbs free energy change for a reaction is 3.26 kJ/molK, what is the equilibrium constant for the reaction at 25.0 oC? Be careful with your units in the calculation.
Calculate the pH for each of the following cases in the titration of .50 mL of .150 M hypochlorous acid, HCLO(aq)
How much KClO3 in grams is needed to generate 7.50L of O2 at pressure of 1.00atm and temp of 298K?
What current (in Amps) is required to plate out 1.22 g of nickel metal from a solution of Ni2+ in 1 hour
How many hours are required for .235 mol of electrons to flow through ta circuit if the current is 1.68 A
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