Chemistry, 28.01.2020 01:31 arlabbe0606
Question 12 a chemistry student must write down in her lab notebook the concentration of a solution of sodium thiosulfate. the concentration of a solution equals the mass of what's dissolved divided by the total volume of the solution. here's how the student prepared the solution: the label on the graduated cylinder says: empty weight: 8.2g she put some solid sodium thiosulfate into the graduated cylinder and weighed it. with the sodium thiosulfate added, the cylinder weighed 76.148g . she added water to the graduated cylinder and dissolved the sodium thiosulfate completely. then she read the total volume of the solution from the markings on the graduated cylinder. the total volume of the solution was 172.7ml . what concentration should the student write down in her lab notebook? be sure your answer has the correct number of significant digits.
Answers: 3
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The biosphere of the earth is made up of what compound? organic or inorganic?
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In november 1987, a massive iceberg broke loose from the antartic ice mass and floated free in the ocean. the chunk of ice was estimated to be 98 mi long, 25 mi wide, and 750 ft thick. a typical backyard swimming pool contains about 24,000 gallons of water. how many of these pools could you fill from the water in this iceberg? (assume the iceberg is a rectangular solid of the above dimensions and consists of water only). express answer in scientific notation.
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Which of the following isotopes has the same number of neutrons as phosphorus-31?
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Question 12 a chemistry student must write down in her lab notebook the concentration of a solution...
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