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One useful method for recycling scrap aluminum converts some of it to common alum [potassium aluminum sulfate dodecahydrate, KAl(SO4)212 H2O], an important dye fixative and food preservative.(a) How many moles of potassium ions are in 392 g alum?mol(b) What is the mass % S in alum (to 3 significant figures)?%(c) What is the maximum amount of alum (in metric tons) that can be prepared from 11.2 metric tons of scrap aluminum (1 metric ton = 1000 kg)?
Calculate the heat of reaction for the same reaction where water is a gaseous product instead of a liquid.
A weak acid with the general formula of HA will react with a base, such as NaOH. Write the neutralization equation which describes the reaction.
Tests on human subjects along the East Coast of the United States in 1965 and 1966, following the era of atomic bomb testing, revealed quantities of about 1.71 pCi of plutonium radioactivity (alpha radiation) in a test subject. How many disintegra..
When potassium carbonate is added to the remaining solution, a precipitate occurs. Which ions were present in the original solution? Write net ionic equations for the formation of each of the precipitates observed.
While resting, the average human male consumes 200 mL of oxygen per hour at 25 degrees Calcius and 1.00 atm for each kilogram of weight. The number of moles of oxygen are unknown and if the oxygen is consumed by a 70.0 kilogram man while resting f..
a three carbon species that has a carbon level of zero at each carbon atom. b) two compounds that contain three carbon atoms and have a carbon atom with a carbon level of 1.
In the preparation of the esters given in this reaction, the reaction product is extracted with 5% sodium bicarbonate solution (NaHCO3)in the isolation step. Why? What gas is evolved during this washing step? Write a balanced equation for the reac..
If the activation energy for a given compound is found to be 103 kJ/mol, with a frequency factor of 4.0 × 10^13 s^-1, what is the rate constant for this reaction at 398 K
In one experiment, 22 g NH3 was used to react with excessive O2 and produces 30.4 g of water, what is the percentage yield of this experiment?
The heat capacity of the calorimeter was 15.7J/K. The final temperature in the calorimeter was 32.4 degree C. What is the specific heat capacity of the mineral?
Calculate the amount of acid that would be left in the water solution after four 20-mL extractions with ether. Do the same calculation, using one 80-mL extraction with ether, to determine which method is more efficient.
At what tempature should 0.5 moles of nitrogen be held to maintain a pressure of 125 kpa in a 1.0L closed sealed container
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