The black "smoke" that flows out of deep ocean hydrothermal vents is made of insoluble metal sulfides suspended in seawater. Of the following cations that are present in the water flowing up through these vents, which ones could contribute to the formation of the black smoke?.
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SAT, 22.06.2019 21:00
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SAT, 28.06.2019 17:50
Which of the following would be considered a nec code violation in regards to the installation of luminaires? a. an outdoor lighting fixture mounted to a tree b. a five-pound, 12-inch diameter light fixture supported by the screw shell of the lampholder c. florescent lay-in fixtures attached to the framing sections of a suspended ceiling with sheet-metal screws d. track lighting over a sink, 2 feet from a bathtub
Answers: 1
SAT, 29.06.2019 21:30
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SAT, 30.06.2019 18:00
What are two basic questions you should ask yourself when contemplating career choices? a. what do i enjoy doing, and what do i hate doing? b. what are my least favorite subjects, and what do i do in my spare time? c. how do i discover what i like, and what do i talk about a lot? d. what do i enjoy doing, and what subjects do i like?
Answers: 1
The black "smoke" that flows out of deep ocean hydrothermal vents is made of insoluble metal sulfide...
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