For some jobs, “good enough” is good enough. that’s sometimes true in chemistry. more often, though, careful planning, calculations, measurement, and laboratory work are necessary to get the desired result. imagine two tasks that would involve a chemical reaction of some sort. for one, measurement is not all that critical. for the other, careful stoichiometry and laboratory process is essential. identify and describe two tasks (projects, operations, devices, etc.) that differ in this way.
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Chemistry, 22.06.2019 04:40
Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)
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Chemistry, 22.06.2019 12:30
What is the percent composition of ca(oh)2? 37.7% ca, 53.0% o, and 10.3% h 45.5% ca, 38.2% o, and 16.3% h 54.0% ca, 43.0% o, and 2.7% h 64.7% ca, 27.0% o, and 8.3% h
Answers: 2
Chemistry, 22.06.2019 15:20
Identify arrows pointing to bonding electrons. done h-0-0-h ) intro
Answers: 3
For some jobs, “good enough” is good enough. that’s sometimes true in chemistry. more often, though,...
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