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Elis [28]
2 years ago
5

Classify the below solids as amorphous or crystalline. emerald glass MgCl, rubber​

Chemistry
2 answers:
Stella [2.4K]2 years ago
7 0

Answer:Classify the below solids as amorphous or crystalline.

✔ crystalline

✔ amorphous

✔ crystalline

✔ amorphous

Explanation:

svet-max [94.6K]2 years ago
6 0

Answer:

Here yo

Explanation:

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The density of air under ordinary conditions at 25 degrees * C is 1.19g / L . How many kilograms of air are in a room that measu
professor190 [17]

Answer:

33.3 kg of air

Explanation:

This is a problem of conversion unit.

Density is mass / volume

Therefore we have to calculate the volume in the room, to be multiply by density. That answer will be the mass of air.

Volume of the room → 9 ft . 11 ft . 10 ft = 990 ft³

Density is in g/L, therefore we have to convert the ft³ to dm³ (1 dm³ = 1L)

990 ft³ . 28.3 dm³ / 1ft³ = 28017 dm³ → 28017 L

This is the volume of the room, if we replace it in the density formula we can know the mass of air in g.

1.19 g/L = Mass of air / 28017 L

Mass of air = 28017 L .  1.19 g/L → 33340 g of air

Finally, let's convert the mass in g to kg → 33340 g . 1kg / 1000 g = 33.3 kg

5 0
3 years ago
Do acids lose or gain hydrogen ions? <br><br>Help<br>please
inysia [295]

Answer: They lose them :)

Explanation:

7 0
3 years ago
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Becquerel placed photographic paper in a drawer with some radioactive rocks and discovered that the amount of exposure on the pa
jolli1 [7]

Becquerel  did not discover that the amount of exposure on the paper was proportional to the amount of uranium that was present in the rocks

<h3>What is radioactivity?</h3>

The phenomenon of radioactivity was discovered by the French scientist Henri Becquerel in 1896 when he placed photographic paper in a drawer with some radioactive rocks.

We have to note that Becquerel did not discover that the amount of exposure on the paper was proportional to the amount of uranium that was present in the rocks hence the stetement is false.

Learn more about radioactivity: brainly.com/question/1770619?

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Why the planets shine though they do not have their own light
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I hope this was a satisfying answer. Have a great night!
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Which agent of erosion can create a limestone cave?
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Water containing carbonic acid and calcium
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