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Chemistry, 22.06.2019 16:00
About 3% of the water on earth is freshest. only about 40% of that freshwater is available for human use. why is so much freshwater unavailable for human use?
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Chemistry, 23.06.2019 06:30
Which of these natural resources is non-renewable a.corn b.wind c.geothermal d.natural gas
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Chemistry, 23.06.2019 07:30
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)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.
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Physics vs organic chemistry which is harder...
History, 27.10.2020 16:50
English, 27.10.2020 16:50
Mathematics, 27.10.2020 16:50
English, 27.10.2020 16:50
Mathematics, 27.10.2020 16:50
Mathematics, 27.10.2020 16:50
History, 27.10.2020 16:50
Mathematics, 27.10.2020 16:50
History, 27.10.2020 16:50
History, 27.10.2020 16:50