Chemistry, 24.01.2020 00:31 Hoeing3195
Which of the following compounds would be expected to be least destructive to the ozone layer?
select one:
a. dichlorodifluoromethane
b. chlorodifluoromethanc. trichlorofluoromethane
d. 1,1,2,2-tetrachloro-1,2-difluoroeth ane
Answers: 2
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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)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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Which of the following compounds would be expected to be least destructive to the ozone layer?
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