Chemistry, 25.11.2021 07:30 katherineweightman
4. Which method is better for separating husk from wheat flour, sieving or winnowing? Why? 5. What are the different properties that you would consider to separate a solid-solid mixture?
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Which statement describes both homogeneous mixtures and heterogeneous mixtures?
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In a laboratory determination of the atomic weight of tin, a sample of tin is weighed in a crucible. nitric acid is added, and the reaction proceeds to give a hydrated tin(iv)oxide plus no2and h2o. the hydrated tin(iv)oxide is then heated strongly and reacts as follows: sno2.xh2o(s)ï‚®sno2(s)+ xh2o(g)the sno2is finally cooled and weighed in the crucible. explain the effect on the calculated atomic weight of tin that would result from each of the following experimental errors: (a)considerable spattering occurs when the nitric acid is added to the tin.(b)the hydrated tin(iv)oxide is not heated sufficiently to change it completely to tin oxide.
Answers: 2
4. Which method is better for separating husk from wheat flour, sieving or winnowing? Why?
5. What...
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