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Katen [24]
4 years ago
12

Which of these never changes during a chemical change?

Biology
1 answer:
cricket20 [7]4 years ago
6 0
B is not correct because new molecules are formed so numbers can change. D isn't correct because the color often changes, for example metallic iron and clear oxygen form red rust. The arrangement of the atoms changes, too so a isn't correct. C is cotrect
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Suppose you measure the diameter of the low-power field of view with a ruler and it is 2 mm. If high power provides 10X more mag
nikdorinn [45]

When using high power the diameter of the field of view would be 20 mm.

A microscope is an optical device that is used to view images that cant be seen with the naked human eyes.

It is made up of lens in which  the diameter field of view can be determined.

The diameter of the viewed field in an optical microscope is termed the field number and represents the diameter of the field measured in millimeters (mm) at the intermediate image plane.

From the question, there are two types of field of view

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Therefore, to determine the diameter of the field of view when using high power is

10  × 2  =  20mm

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brainly.com/question/820911

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Use the principle of original horizontality to identify the two rocks that are nearly the same age.
Digiron [165]

The correct answer is - C and D.

The principle of original horizontality means that the rock layers have been order by age, with the layers at the top being the youngest, while the layers at the bottom being the oldest.

In this picture it is little hard to tell which rocks belong to the same layer from first look because there are multiple twists and turns, an uneven surface, caused by pressure on the crust.

By carefully examining the image though, we can trace the layers more properly and see which ones are younger, which older, and which have the same relative age. In this case, we can see that the markings C and D are actually on the same layer of rocks, thus being a good indication that they have the same relative age.

4 0
3 years ago
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