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a) A student records the following data in the laboratory when determining the percentage water in an unknown hydrate.What is the percentage water in this student's unknown?
Mass of container ------47.952g
Mass of container and hydrate ---49.837g
Mass of container and contents after -first heating 49.500g
second heating 48.918g
third heating 48.8119
b) Based on the value obtained in the three heating above,do you think the student should have confidence in his results?why?what do you think he should do to be more confident in his result?
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