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How can a give a full method for the experiment of separating sand from water by filtration? 1-materials 2-steps 3-conclusion also for water and salt separated by the evaporation or distillation process
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Dumbledore decides to gives a surprise demonstration. he starts with a hydrate of na2co3 which has a mass of 4.31 g before heating. after he heats it he finds the mass of the anhydrous compound is found to be 3.22 g. he asks everyone in class to determine the integer x in the hydrate: na2co3Β·xh2o; you should do this also. round your answer to the nearest integ
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The half-life of a certain element is 100 days. how many half-lives will it be before only one eighth of this elementremains?
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What are two radioactive isotopes that are used for dating rocks that are older than 10 million years
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Which conditions suggest that a bond will be ionic...
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