One kilogram of water is contained in a piston-cylinder device at 100 °c. the piston rests on lower stops such that the volume occupied by the water is 0.835 m. the cylinder is fitted with an upper set of stops. when the piston rests against the upper stops, the volume enclosed by the piston-cylinder device is 0.841 m3. a pressure of 200 kpa is required to support the piston. heat is added to the water until the water exists as a saturated vapor. how much work does the water do on the piston? what is the heat transfer?

What is the mass of 8 moles of sodium atoms

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Achemistry student needs to standardize a fresh solution of sodium hydroxide. he carefully weighs out of oxalic acid , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in of distilled water. the student then titrates the oxalic acid solution with his sodium hydroxide solution. when the titration reaches the equivalence point, the student finds he has used of sodium hydroxide solution.calculate the molarity of the student's sodium hydroxide solution. be sure your answer has the correct number of significant digits.