Which of the following enable us characterize a compound by a specific chemical formula?
A) law of conservation of energy
B) law of conservation of mass
C) law of constant composition
D) all of the above
C
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A current problem with recycling is the inability to mix different plastics.
Answer the following statement true (T) or false (F)
A group of individuals of a single species that lives in a specific area make up a(n)
A) population. B) community. C) ecosystem. D) food web.
Which of the following is used to measure relative humidity?
A) aneroid barometers B) hair hygrometers C) anemometer D) weather vane
In a municipal wastewater treatment plant, the primary treatment step includes ________
A) micro-filtering the sewage B) chlorinating the sewage C) letting sewage sit in large settling tanks so suspended solids can settle out D) stirring the sewage to increase oxidation E) adding bacteria to the sewage