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The thiosulfate ion (S2O32-) and the dithionite anion (S2O42-) are two other sulfur containing reducing agents. What are the oxidation states of sulfur in the two ions?
Calculate the and the concentrations of all species present (H3O+,F-, Cl-,and OH-) in a solution that contains of HF 0.19 M (Ka=3.5*10^(-4)) and 0.19 M of HCl.
calculate the difference between the Gibbs free energy and Helmholtz free energy for this reaction at normal temperatures and pressures.
Calculate the mass of sodium hydroxide that must be added to 1.00 L of 1.00 M HC2H3O2 to double the pH of the solution (assume that the added NaOH does not change the volume of the solution)
A solution is prepared by dissolving 1.50 g of compound in 25.0 mL H20 at 25 degrees Celsius. The boiling point of the solution is 100.45 degrees Celsius.
The reaction between sulfamic acid and sodium nitrite produced 388mL of Nitrogen gas collected over water at 23 degrees C and 770 mmHg. How many moles of Nitrogen gas does this represent (assuming ideal behavior)
suppose that cells are grown on amino acids that have all been labled with 13C at the alpha carbons. identify the atoms in cytosine and guanine that will be labled
Calculate the mean percent of hydrogen peroxide when three determinations were 3.03% , 2.89% and 3.22%
A unit of heat energy that was formerly used frequently was the calorie (cal). Calculate the calorimeter constant for the coffee-cup calorimeter in terms of cal/g degrees C.
How many moles of oxygen are needed to react with 5.0 moles of ammonia? In the above reaction, how many moles of water can be produced from 256 grams of oxygen?
The first ionization energy of Ne is 2081 kJ/mol. The sodium ion Na+ is isoelectronic with Ne, but the ionization energy for Na+ is 4560 kJ/mol. Why is it harder to remove an electron from Na+ than from Ne if they are isoelectronic
The generic metal hydroxide M(OH)2 has Ksp = 3.85×10-18. What is the solubility of M(OH)2 in pure water
Hydroxylamine, HONH2, readily forms salts such as hydroxylamine hydrochloride which are used as antioxidants in soaps. Hydroxylamine has Kb of 9.1 x 10^-9. What is the pH of a 0.025M HONH2 solution
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