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Alex
3 years ago
14

Which of the following statements correctly describes what happens in all chemical reactions?

Chemistry
1 answer:
azamat3 years ago
4 0

Answer:

Bonds between atoms are broken/ or new bonds are formed

Explanation:

Due to chemical changes.

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VARVARA [1.3K]

Answer:

2.25×10¯³ mm.

Explanation:

From the question given above, we obtained the following information:

Diameter in micrometer = 2.25 μm

Diameter in millimetre (mm) =?

Next we shall convert 2.25 μm to metre (m). This can be obtained as follow:

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Therefore,

2.25 μm = 2.25 μm / 1 μm × 1×10¯⁶ m

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6 0
3 years ago
Lucas rubs a plastic ruler on his sweater. He waves the ruler above a pile of shredded paper and notices that the pieces of pape
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Answer:

D

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When the glass ruler is rubbed over the woolen sweater, the wool gets positively charged and the ruler gains electron to form negative charge.

Now if this charged is not earthed, the negative charged ruler attracts the uncharged bits of paper, as a result of which the paper gets attached to the ruler.

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