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sveta [45]
3 years ago
12

Which of these statements best explains why the soil around a volcanic region is fertile?

Chemistry
2 answers:
Troyanec [42]3 years ago
8 0

Answer: b. Volcanoes aid in the formation of new rocks, which help form new soils.

Explanation:

Volcanic eruption is a natural phenomena which involves the expulsion of hot magma and gases from the earth geosphere with drastic explosion due to generation of heat and pressure by the hot mantle. The hot magma get solidify on the surface of earth crust and becomes rocks. These rocks contains many inorganic minerals. If these rocks wither into soil can support the growth of plants because of the presence of the minerals.

Temka [501]3 years ago
4 0

Answer:

C. Particles released in the air by volcanoes fall to the ground and enrich the soil.

Explanation:

Got it right on the quiz

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What physical change happens to atoms and molecules in a solution that is strongly heated in a flame? Is there a phase change? I
Charra [1.4K]

When atoms and molecules speed up or slow down, that is a physical change. When they change state from liquid to solid or from gas to liquid, that is a physical change. ... The ions or molecules can still come back together to form the original substance

6 0
2 years ago
What is the metal cation in K,SO,? (cation is pronounced cat-ion and refers to a positively charged ion)
slamgirl [31]

Answer:

Potassium cation = K⁺²

Explanation:

The metal cation in K₂SO₄ is K⁺². While the anion is SO₄²⁻.

All the metals have tendency to lose the electrons and form cation. In given compound the metal is potassium so it should form the cation. The overall compound is neutral.

The charge on sulfate is -2. While the oxidation state of potassium is +1. So in order to make compound overall neutral there should be two potassium cation so that potassium becomes +2 and cancel the -2 charge on sulfate and make the charge on compound zero.

2K⁺²  ,  SO₄²⁻

K₂SO₄

8 0
2 years ago
Which of the following elements would make a 2- ion? <br> A. N<br> B. O <br> C. Si<br> D. Mg
nataly862011 [7]

Answer:

oxygen

Explanation:

because the 2nd shell is not complete which is suppose to be 8 and since oxygen is 8 it first shell is 2 which is complete and the second shell which is 6 is not complete because we all know that 2+6=8 but the standard shell is

K-2

L-8

M-8

3 0
3 years ago
1.Which form of energy is due to the motion of an object's particles .
tamaranim1 [39]

Answer:

thermal

Explanation:

4 0
2 years ago
A certain half-reaction has a standard reduction potential E0red = +0.13V . An engineer proposes using this half-reaction at the
Ivan

Answer:

a. 1.23 V

b. No maximum

Explanation:

Required:

a. Is there a minimum standard reduction potential that the half-reaction used at the cathode of this cell can have?

b. Is there a maximum standard reduction potential that the half-reaction used at the cathode of this cell can have?

The standard cell potential (E°cell) is the difference between the standard reduction potential of the cathode and the standard reduction potential of the anode.

E°cell = E°red, cat - E°red, an

If E°cell must be at least 1.10 V (E°cell > 1.10 V),

E°red, cat - E°red, an > 1.10 V

E°red, cat - 0.13V > 1.10 V

E°red, cat > 1.23 V

The minimum standard reduction potential is 1.23 V while there is no maximum standard reduction potential.

4 0
3 years ago
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