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Explain how many moles of magnesium (Mg) are there in 87.3 g of Mg3N2? Define how many atoms of Mg are in 87.3 g of Mg3N2? Define what is the molar mass of Mg3N2?
Calculate the mass of pure water recovered per mass of water in the process feed. A.3) Calculate the weight percent of salt leaving the 5th evaporator. (Note: Thoughtful selection of control volume can save you a lot of algebra.)
Explain the flow rate from the primary clarifiers is 60,000m3/day and a biomass production rate of 0.5 kg/m3-d. The return VSS concentration is 12,000 mg/L. The specific of the VSS is 1.0.
What is the percent purity of the calcium hydroxide if the titration requires 7.81 mL of the acid to reach the endpoint?
question pure benzene freezes at 5.50 degrees celsius. when 10.06 g c10h8naphthalene mm 128.16 gmol is added to 100.0
A balloon was filled by mixing 10.0g of Ne(g) and 10.0g of O2(g). What is the mole fraction of oxygen in the balloon.If the total pressure in the balloon is 760 Torr, what is the partial pressure of the oxygen
Which of the following has the smallest mass?
Describe the hazards of each of the solutions. Explain why the mixture is not as hazadous as the original solution from a waste disposal point of view.
An aqueous copper(II) sulfate solution is electrolyzed for 3 hours with a 1.8 ampere current
A sample of neon gas at 1.20 atm compresses from 250 mL to 125 mL. If the temperature remains constant, what is the final pressure
A cool solution of sodium nitrite and a solution of the amine in an ice bath. Moderately concentrated hydrochloric acid is added.
The following reaction, yielding manganese, proceeds until the limiting substance is all consumed: 2Al + 3MnO = Al2O3 + 3Mn A mixture containing 1000 grams of Aluminum and 2000 grams of MnO was heated to initiate the reaction.
The pH of 0.5 M HF is 1.88. Calculate the difference in pH when 6.06 g of NaF is added to 205.7 mL of this solution. Ignore any changes in volume. The Ka value for HF is 3.5 x 10-4.
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