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Chemistry, 22.06.2019 09:30
Melissa is interested in her family tree and how her family has changed over its many generations. melissa probably more closely resembles
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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.
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Chemistry, 23.06.2019 10:30
If a computer chip switches off -on-off in 0.015 us, what is the switching time in nanoseconds?
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