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Hitman42 [59]
3 years ago
10

A region of metamorphic rock lies far beneath Earth’s surface. In time, which two ways can the rock make its way upward to Earth

’s surface, where people are able to see it? MULTIPLE CHOICE a.-It can be transported by water and deposited on Earth’s surface. b.-It can uplift slowly due to the pressure of Earth’s plates. c.-It can become intrusive igneous rock through compaction and cementation. d.-It can be transported by wind and deposited on Earth’s surface. e.-It can melt into magma and recrystallize as extrusive igneous rock.
Chemistry
2 answers:
NeX [460]3 years ago
8 0

It can uplift slowly due to the pressure of Earth’s plates.

It can melt into magma and recrystallize as extrusive igneous rock.

Evgen [1.6K]3 years ago
3 0

Answer:

Option (B) and (E)

Explanation:

Metamorphic rocks are the rocks that are formed due to the increasing pressure and temperature condition. These are secondary rocks and are directly derived from either igneous, sedimentary or other types of metamorphic rocks. For example, Schist, Gneiss, Marble, and Quartzite.

These rocks are located both at and beneath the earth's surface. These rocks can be exposed in an outcrop if the rocks are melted due to the extremely high temperature, as a result of which the melt will turn into magma and this magma further undergoes crystallization due to the lowering of temperature and forms an extrusive type of igneous rocks.

In addition to this, these rocks can also come to the surface if the lithospheric plates containing these metamorphic rocks are forced to rise up in a convergent or a divergent type of plate tectonic boundary.

Thus, the correct answer is option (B) and (E).

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18. <span>Answer is </span>A

<span>  
<span>Since the enthalpy of reaction is positive, the forward reaction is<span> an endothermic reaction which means the energy is gained from the surrounding to happen the reaction. If the temperature decreases, according to the </span></span>Le Chatelier's principle, the system tries to become equilibrium by increasing temperature. Since forward reaction is endothermic (because of the bond breaking), the backward reaction is exothermic (because of the bond making) which releases the energy to the surroundings. This makes the increase of temperature. So if the backward reaction is promoted because of the decrease of temperature, then the concentration of H</span><span>₂ will decrease.</span>

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19. Answer is A.

The reactant side has 2 moles/molecules of reactants and the product side has 4 moles/molecules of products which come from 1 N₂(g) and 3 H₂<span>(g). If the pressure is reduced in the system, according to the Le Chatelier's principle, the system tries to increase the pressure. </span><span>Hence, forward reaction is promoted because of the higher number of molecules in product side. If the forward reaction is promoted, the concentration of NH</span>₃(g) will decreased.


<span>20. </span>Answer is C.

If the concentration of reactant is increased in the system, according to the Le Chatelier's principle, the system tries to reduce the concentration of that reactant. So if NH₃(g) concentration is increased, then to be equilibrium, the forward reaction will be promoted. Then the concentration of N₂<span>(g) will increase.</span>

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Answer:

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<em></em>

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