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Electrolysis of molten NaCl in a Downs cell is the major isolation step in the production of sodium metal. Suppose 246 g of Na metal is formed.
(a) How many moles of electrons are required?(b) How many coulombs are required?(c) How many amps are required to produce this amount in 8.50 h?
why is hcl used in the preparation of sni2 instead of aceticacidacetic anhydride? please explain in detail.glacier
How many moles of NaOH must be added to 0.550 L of 0.191 mol/L HC3H5O2(aq) to obtain a solution with pH=4.7? Assume the temperature is 25oC. (For HC3H5O2, pKa=4.89 at 25oC).
Write out the equilibrium that results when a salt solution of the conjugate base of this acid is dissolved in water. What is the equilibrium constant expression for this situation
calculate the amount of sodium nitrate in mg in one liter if 3.8mg of nitrate was detected in one liter of water.
The high-field:low-field integration ration is 2:1. Deduce the structure of the organic hald and explain the NMR signals. I'm thinking it's 1,1-dichloropropane.
Copper (II) Iodate precipitates from iodate solution. The formula of the precipitate is Cu(IO3)2. A saturated solution of this substance was made in 0.01 M KlO3. The copper concentration was found to be 0.0012M
What is the volume of ammonia gas, measured at 489.9mmHg and 37.4oC, is required to produce 8.41g of ammonium sulfate according to the following balanced chemical equation
what is the molarity of a sodium carbonate solution if it requires 35.2 ml of this solution to completely react with
In a constant-pressure calorimetry experiment, a reaction gives off 22.3kJ of heat. The calorimeter contains 150g of water, initially at 20.4 degrees C. What is the final temperature of water. heat capacity of the calorimeter is negligibly small. A..
Hydrogen bonds a) play an important role in the solvent properties of water b) are not involved in protein structure c) play a role in the properties of DNA, but not of RNA d) give water a lower boiling point than expected 44
calculate the amount of heat in joules (q) required to affect this temperature change and the total change in internal energy, ?U. Note that some books use ?E as the symbol for internal energy instead of ?U.
Using the calibration data provided below, calculate the concentration of cocaine (mg/mL) in the original urine sample.
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