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Alecsey [184]
3 years ago
11

Please Help!!!!!!!!

Chemistry
2 answers:
Alex3 years ago
8 0

Answer: very low amount of humus :)

Explanation:

Ira Lisetskai [31]3 years ago
7 0
Well I think it’s B but I hope I’m not wrong
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Plz do this i need help ill give u brailiest
Musya8 [376]

1. C

2. B

3. B

4. sorry, but we cant see the pictures. thats all I can do.

-Chad

8 0
3 years ago
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Scientific experiments showed evidence that the mass of an atom was greater than the total mass of its protons. these experiment
Leviafan [203]
The answer to your proposed question is Neutron. This is because the atomic mass unit of a neutron is 1 and so it would contribute to the overall mass of the atom.
I hope this answer helped you!
5 0
2 years ago
how many moles of NaCl are dissolved in 250 mL of solution if the solution concentration is 0.150 M?​
aliya0001 [1]
What lol I am just answering so I can get points :)
5 0
3 years ago
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Which of the following solutions would have the highest osmotic pressure?
Gennadij [26K]

Answer:

Option d. 0.10 m Cr₂(SO₄)₃

Explanation:

Formula for the osmotic pressure is determined as:

π = M . R . T . i

So you have to take account the i (Van't Hoff factor, numbers of ions dissolved)

  • CH₄N₂O → 0.35 m

Urea is an organic compound, so the i value is 1

  • H₂O → The i is also 1
  • Zn(CH₃COO)₂ → 0.15 m

Zync acetate can be dissociated:

Zn(CH₃COO)₂  →  1Zn²⁺  + 2CH₃COO⁻

In this case, the i is 3. (you see, the stoichiometry of ions)

Cr₂(SO₄)₃ →  0.10 m

Chromium sulfate is dissociated:

Cr₂(SO₄)₃ →  2Cr³⁺  +  3SO₄⁻²

i = 5

BaI₂ → 0.16 m

BaI₂ →  1Ba²⁺  +  2I⁻

i = 3

8 0
3 years ago
Why does changing the volume of a container change the pressure of the gas in it?
ollegr [7]

Answer:

Changing the volume increases the area that the molecules collide with so the force is spread over a larger area.

Explanation:

The volume of a container is the space within the container. This is the amount of void the gas can occupy.

When the volume of a container is changed, the space either increases or decreases.

  • An increase in volume creates more space within the container.
  • This spreads out the force over a larger area.

When the volume of the container is reduced,

  • the force is confined to much smaller space.

The frequency of collision is higher for tiny spaces.

But lower for a large volume.

8 0
3 years ago
Read 2 more answers
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