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PilotLPTM [1.2K]
2 years ago
8

What characteristic of an element differs between isotopes?

Chemistry
1 answer:
Marianna [84]2 years ago
4 0
The atoms of different isotopes are atoms of the same chemical element; they differ in the number of neutrons in the nucleus.
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Electrical energy to mechanical energy

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For a lake in Michigan, researchers have determined that largemouth bass feed on smaller fish, which in turn feed on zooplankton
allsm [11]

Answer:

the expected decline in largemouth bass is 3,000 kg.

Option d) 3,000 kg is the correct answer.

Explanation:

Given the data in the question;

In 2016, there was 600,000 kg of zooplankton in the lake.

In 2017, an accidental runoff of insecticide near the lake caused a 50 percent decline of the zooplankton population in the lake.

Now,

The remaining mass of zooplankton  after the 50% decline will be;

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⇒ 600,000 × 50/100

⇒ 300,000 kg of zooplankton

Now, with 10 percent trophic efficiency;  smaller fish directly feed on zooplankton; decline in smaller fish mass will be;

⇒ 300,000 kg × 10%

⇒ 300,000 × 10/100

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⇒ 30000 kg × 10%

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Option d) 3,000 kg is the correct answer.

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