3 years ago

Compare and contrast the fine and coarse adjustment knobs on a microscope

1 answer:

8 0

The fine adjustment knob focuses an image. The coarse adjustment knod moves the slide up or down.

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The best answer would be A. Hope i helped

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daser333 [38]

Answer:

<h2>1.38 moles</h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

$n = \frac{N}{L} \\$

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

$n = \frac{8.30 \times {10}^{23} }{6.02 \times {10}^{23} } = \frac{8.30}{6.02} \\ = 1.3787 37...$

We have the final answer as

<h3>1.38 moles</h3>

Hope this helps you

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Molodets [167]

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