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zepelin [54]
3 years ago
5

If a typical smelt weighs 225 g, what is the total mass of pcbs in a smelt in the great lakes?

Physics
1 answer:
Alex787 [66]3 years ago
8 0

Since a typical smelt has 1.04 ppm of PCB is great lakes. So the amount of PCB in a smelt in great leak can be calculated by multiplying the mass of smelt by the pcbs present in a smelt

225 g * ( 1.04/100000) = 2.34 x10^-4 g pcbs

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<h3><u>Answer;</u></h3>

Electron cloud

<h3><u>Explanation;</u></h3>
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5 0
3 years ago
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Which of the following does NOT support the geologic evidence used to date the earth?
Zanzabum

Answer:

comparing the anatomy of organisms

Explanation:

Basically, Rocks are the solid evidence used to date the earth.

Due to the changing in the genetic make up of organisms,the anatomy of organisms is not a reliable evidence to date the earth.

4 0
2 years ago
A car has two horns, one emitting a frequency of 199 hz and the other emitting a frequency of 203 hz. what beat frequency do the
andriy [413]
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That is, beat frequency is the absolute difference between two frequencies. Is is as a results of destructive and constructive inferences.

Therefore, in this case:

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3 0
2 years ago
Human activities can have an impact on natural disasters.
kolezko [41]
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6 0
3 years ago
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Answer:

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Now we need to convert units, using the proper conversion factor.

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7 0
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