Why the same water begins to freeze
When the pump is turned on, the water begins to boil. A flask of water is connected to a powerful vacuum pump. After a few minutes, the same water begins to freeze. Eventually, the ice disappears. Discuss what happens at each step.
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Determine the percent composition of CaSiO3 when the anticaking agent added to Morton salt is calcium silicate, CaSiO3. This compound can absurd up to 2.5 times its mass of water and still remains a free flowing powder.
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The student then adds 5 mL of an unknown volatile liquid and heats the flask in a boiling water bath at 99.2C(degrees) until all liquid disappears.
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Determine the cell voltage of an electrochemical cell that consists of two platinum (inert) electrodes with the 0.100MCrCl3/0.0500 M K2Cr2O7in one compartment and 0.100 M FeCl3/0.0700 MFeCl2 in another compartment.
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