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The emf of a cell made of a Zn anode and hydrogen cathode immersed in 0.5M ZnCl2 is +0.590V. What is the pH of the solution?
Use the Nernst Equation?
A white precipitate formed. This mixture was centrifuged and separated, and the clear solution was then treated with 1 M Na2Co3. No Preceipitate formed. Which metal ions were present in your unknown? Which metal ions were absent
The boiling point of an aqueous solution is 101.53 °C. What is the freezing point? Constants can be found here.
Based on the composition and the proton nmr observations, show by the appropriate crystal field splitting diagrams what the static ground state structure must be.
A student determines the iron(II) content of a solution by first precipitating it as iron(II) hydroxide, and then decomposing the hydroxide to iron(II) oxide by heating.
If you were extracting 4-chloroaniline and naphthalene (a mixture in ether), what reagents could you use to obtain a separation via extraction technique
Distilled water in equilibrium with air contais dissolved carbon dioxide at a concentration of 1.0 x 10^-5 M. Calculate the pH of such a solution.
What is the volume of 0.750 M KCl(aq) that can be prepared from 125.0 g KCl(s)? The volume is ___x10^____ L
What is the pH of the solution created by combining 2.50 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)
Calculate the increase in entropy when 3.50 mol of monatomic perfect gas with Cp = 5/2 R is heated from 250 K to 700 K and simultaneously expand from 20.0 L to 60.0 L.
N2 +3 H2 - 2NH3 Suppose that at a particular moment during the reaction, molecular hydrogen is racting at the rate of 0.074M/s. what is the rate of formation of ammonia
which of the following combinations of hybridization and molecular geometry is possible?1. sp3 trapezoidal2. sp3
A sample of Hydrogen gas was collected over water at 21 degrees C and at a pressure equal to the atmospheric pressure of 748 mmHg. The volume of the sample was 512 ml. How many grams of the H2 are in the sample. The vapor pressure of water at 21 d..
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