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Use the octet rule to predict the formula of the compound that would form between arsenic and iodine , if the molecule contains only one arsenic atom and only single bonds are formed. Formula:
If a 25 ppm Nitrogen dioxide in the air contains 25 mg of the compound in every liter of solution. How many milligrams are contained in 2.5 L sample of the air?
An aqueous solution has 0.0034 g of oxygen dissolved in 1000 g of water. Calculate the
dissolved oxygen concentration of this solution in parts per million.
Determine the percent by volume of solution made by combining 35 mL of ethanol with
enough water to produce 350 mL of the solution.
A saline solution with a mass of 233 g has 34.5 g NaCl dissolved in it. What is the mass
percent concentration of the solution?
Determine the molarity of each of the following solutions:
a. 2.34 mol KCl in 2.300 L of solution
b. 0.56 g H2SO4 in 2 L of solution
c. 20.45 g Al(NO3)3 in 2000 mL of solution
Calculate the molality of a 6.55 kg sample of a solution of the solute CH2Cl2 dissolved in the
solvent acetone (C3H6O) if the sample contains 876 g of methylene chloride.
A solution is prepared by mixing 1 g of ethanol (C2H6O) with 100 g water to give a final
volume of 101 ml. Calculate the mole fraction for the solute and solvent, and the molality of
ethanol in the solution.
In an ultrafiltration plant, whey is to be concentrated. Two streams are to be produced, a protein rich stream and a liquid (mainly water) stream. In all 140000kg per day are to be processed to provide a 12fold concentration of 95% of the protein from an original whey concentration of 0.93% protein and 6% of other soluble solids.
Assuming that all of the soluble solids other than protein remain with the liquid stream, which also has the 5% of the protein in it, estimate the daily flows and concentrations of the two product streams.
((a)protein stream;11084kg per day,11.16% protein,(b) liquid stream 128916kg per day, 0.05% protein)
1. What does the line from Point B to Point D indicate?
2. What does the line from Point B to Point C indicate?
3. What does the line from Point A to Point B indicate?
4. What happens at the critical point?
