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Suppose Aniline (MW93 g/mol) co-distills with water 98.2 C then the vapor pressure of water at 98.2 C is 717 mmHg. It is required to isolate 10 g of aniline. Explain what is the minimum volume of water needed to isolate 10 g of aniline in a steam distillation at 760 mmHg?
A solution made from 6.50 g of an unkown compound in 27.8 g of diphenyl has a molality of 0.195 m. Calculate the molar mass of the unknown
Suppose the reaction Ca3(PO4)2 + 3H2SO4 ------ > 3CaSO4 + 2H3PO4 is carried out starting with 103 g of Ca3(PO4)2 and 33.7 g of H2SO4. How much phosphoric acid (H3PO4) will be produced?
A sample of chlorine gas at a pressure of 420 mm Hg and in a volume of 3.50 L was heated from 18.0oC to 45.0oC after being transferred to a container of volume 2.35 L. The pressure in this new container should be about
If you do 1J of work pulling on a rubber band, what amount does the internal energy of the rubber band change
What is the pH of a solution created by dissolving 15.0 g of monosodium phosphate NaH2PO4 and 12.0 g of disodium hydrogen phosphate Na2HPO4. The Ka is 6.2*10^-8. How much .2 M NAOH is needed to raise the pH of the solution by .04 units
Some ice cubes at 0 degrees C with a total mass of 379g are placed in a microwave oven and subjected to 750. W (750. J/s)of energy for 5.00 minutes. (Assume all energy of the microwave is absorbed by the water and no heat loss by the water.)
62.61 grams of CaOH2*7H2O contains. 1. How many moles of associated water molecules. 2. Molecules of associated water molecules
Express the concentration of a 0.0860 M aqueous solution of fluoride, F-, in mass percentage and in parts per million (ppm). Assume the density of the solution is 1.00 g/mL.
An experiment is performed to determine the density of a metal. When a 35.1 g piece of the metal is placed in a graduated cylinder containing 32.8 mL of water, the volume increases to 39.2 mL. What is the density of the metal
a sample of nitrogen gas occupies 1.55 L at 27.0 C and 1.00 atm pressure. What will the volume be -100 C and the same pressure?
The n=8 to n=2 transition in Bohr hydrogen atom occurs in the region of the electromagnetic spectrum. A radio B ultraviolet C X-ray D infrared E microwave
a student wants to react mgs with 100ml of 1.5 m hcl but theintent is to have all the mgs react while leaving 50 of the
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