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Zanzabum
3 years ago
11

Which statement correctly describes why a compound is a pure substance?

Physics
1 answer:
ad-work [718]3 years ago
6 0

Explanation:

A compound is a pure substance composed of two or more different atoms chemically bonded to one another. A compound can be destroyed by chemical means. It might be broken down into simpler compounds, into its elements or a combination of the two.

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The place you get your hair cut has two nearly parallel mirrors 6.5 m apart. As you sit in the chair, your head is 2.0 m from th
ASHA 777 [7]

Answer:

13 m

Explanation:

It is given that :

I got a haircut  sitting at a place having two parallel mirrors at a distance = 6.5 m apart

My head is at a distance of 2 m from the nearer mirror.

Now the light from the back of my head must go to (6.5 - 2) = 4.5 m to the back mirror.

Then it must go to 6.5 m to the front mirror and 2 m from the front mirror to my eyes.

So in order to see the back of my head, it will be = 6.5 + 2 + 4.5 = 13 m away.

4 0
3 years ago
5 The frequencies of AM radio waves,
aleksklad [387]
Message me back and I can help you.
5 0
4 years ago
Are porkaryotic cells bigger or smaller than eukaryotic cells
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The prokaryotic cells are indeed smaller than the eularyotic cells.
Eukaruotic cell size -10-100um
Prokaryotic cell size - 1-10 um
8 0
4 years ago
What is the "atomic mass" of an atom?
brilliants [131]

Answer:

It consists of one proton and one electron. The atomic mass for an atom of hydrogen is one dalton, which is calculated from the lone proton.

Explanation:

6 0
4 years ago
In a laboratory, you determine that the density of a certain solid is 5.23×10−6kg/mm3. Convert this density into kilograms per c
kiruha [24]

Answer:

5.23\cdot 10^3 kg/m^3

Explanation:

The density of the solid is

d = 5.23\cdot 10^{-6}kg/mm^3

we want to convert it into kg/m^3. We must note that:

1 m^3 = 1 m \cdot 1 m \cdot \1m =1000 mm\cdot 1000 mm \cdot 1000 mm=1\cdot 10^9 mm^3

Therefore, the conversion can be done as follows:

d=5.23\cdot 10^{-6} \frac{kg}{mm^3} \cdot (1\cdot 10^9 \frac{mm^3}{m^3}) =5.23\cdot 10^3 kg/m^3

8 0
3 years ago
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