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Suppose that you planned to gold-plate a medallion using a 0.500M solution of Au(NO3)3 using a current of 0.50 amps over a period of 3 hours.
1) how many grams of gold would plate on the metal used for the medallion?
Explain what you are thinking as you show your calculations.
2) how much 0.500 M Au(NO3)3 solution would you need to prepare to accomplish this?
3) If the price of the base metal is negligible, and the price of gold is $ 1791.05/oz. ( as of the date of this publication), what is the value of the medallion?
Calculate the specific heat capacity of the metal when the final temperature of the mixture =38.7?C.? (Assume that there is no energy lost to the surroundings.)
the preparation of the esters given in this reaction, the reaction product is extracted with 5% sodium bicarbonate solution (NaHCO3) in the isolation step
if 7.o moles of sulfur atoms and 10 moles of oxygen molecules are combined to form the maximum amount of sulfur trioxide, how many moles of which reactant remain unused at the end.
A calibrated flask was filled to the 25.00 {\rm mL} mark with ethyl alcohol. By weighing the flask before and after adding the alcohol, it was determined that the flask contained 19.7325 {\rm g} of alcohol
The vapor pressures of pure benzene and pure toluene at 25 C are 94.2 torr and 28.4 torr, respectively. Assuming ideal behavior
If 19.2 g of CO2 is produced in the reaction of C2H2 with O2 to form CO2 and H2O, how many grams of H2O are produced in this reaction.
Calculate how the amount of AgCl(s )will change when the equilibrium is disturbed by Adding AgNO 3
What is ?, the electromotive efficiency to three significant figures?? Open the hint panel below for the definition of electromotive efficiency. (d) What is the pH of an unknown that gives a reading of 19.6 mV with this electrode at 30°C?
Label and identify ALL functional groups. Label the chiral carbons (*), label the priorities (1,2,3,4) of the four "things" connected to the chiral carbon, draw the arrow or rotation and identify as R or S.
A 1.90 g sample of a large boimolecule was dissolved in 11.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C. Calculate the molar mass of the biomolecule
Determine the final concentration if a 144-mL portion of that solution is diluted using water of 143 mL ?
A patient needs 2.80×10-2 of a sulfa drug. There are 8.00 tablets in stock. How many tablets should be given?
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