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A cell composed of a platinum indicator electrode as well as a silver-silver chloride reference electrode in a solution containing both Fe2 as well as Fe3 has a cell voltage of 0.711 V. If the silver-silver chloride electrode is replaced with a saturated calomel electrode, define the new cell voltage
a 8.0-l sample of helium is held at constant pressure. if the temperature is changed from 41 degrees c to 35 degrees c
A mixture of helium and neon gases at 237 K contains three times the number of helium atoms as neon atoms. The concentration (n/V) of the mixture is found to be 0.150 mol/L. Assuming ideal behavior, what is the partial pressure of helium
Draw a diagram showing the stratification in a body of water. Label the different layers and describe the type of chemistry (and species) that occurs at each level.
An experiment shows that a 248mL gas sample has a mass of 0.433g at a pressure of 745 mmHg and a temperature of 28 degrees C. What is the molar mass of the gas
How much energy is released when 32.4 g of water freezes? The heat of fusion for water is 6.02 kJ/mol. q=? kJ
What is the %Cu (by mass) in the metal oxide product formed when Cu2CO3(OH)2 decomposes upon heating above 200°C
There are over fifteen isotopic forms of sulture. one of those isotopes is sulfur-29 (amu=28.99) What is the binding energy for one mole of sulfure-29, given the masses of a proton, a neutron, and an electron are 1.007276u, 1.008666u, .000548u
calorimeters, is -3226.7 kJ/mol. When 2.5127 g of benzoic acid was burned in a calorimeter, the temperature increased from 20.84 to 25.67C. What is the heat capacity of the bumb
a set of data gave an average unpopped corn kernel mass of 0.12 grams. how many kernels are in a pound 454 g of
Urea, NH2CONH2, is a nonvolatile nonelectrolyte. Calculate the boiling point of a solution of 30.0g of urea in 250g of water
What will the pH of the equivalence point be when 10.00 mL of .0200M Carbonic acid is fully titrated to the 2nd end point using .05 M NaOH?
the activation energy of a certain reaction if 65.7kjmol. how many times faster will the reaction occur at 50 degrees
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