2 points
7. Given the following specific heats of energy, if the materials were left
out in t...
Chemistry, 08.10.2020 04:01 diametriagay
2 points
7. Given the following specific heats of energy, if the materials were left
out in the sun for 2 hours, which material would be the hottest? *
Material A: 2.03 J/gC
Material B: 0.71 J/gC
Material C: 0.89 J/gC
Material D: 0.45 J/gC
Answers: 3
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The velocity of any object depends upon a) the location of the object. b) the location of the observer. c) which measurement tools are used. d) the relative motion of the observer.
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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
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