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Nataly [62]
3 years ago
14

What happens when metamorphic rock becomes igneous rock?

Chemistry
2 answers:
Nookie1986 [14]3 years ago
8 0
D. metamorphic rock melts and crystallizes to become igneous rock <span />
Tanzania [10]3 years ago
6 0

D. Metamorphic rock melts and crystallizes to become igneous rock.

Igneous rocks form when molten rock cools and solidifies. Igneous rocks have different textures and this is because the texture is determined by how quickly the rock cools down. The rocks that tend to be near the surface cool faster than the rocks that are not close the the surface.

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A. The half-life for a first order reaction in 49 minutes. What is the rate constant?B.For a second order reaction, the half-lif
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Answer:

a) 0,014 min⁻¹

b) 1452 seconds.

c) 0,02156 M

d) The faster rate is for the reaction A. The largest rate constant, k, is for A reaction

Explanation:

a) For a first order reaction the half-life is:

t_{1/2} = \frac{ln(2)}{k} <em>(1) </em>As half.life is 49 min. Rate constant -k- is: 0,014 min⁻¹

b) The half-life is defined as the time that takes in descompose the half of the initial concentration of a compound.

As half-life is 726s. In 726s the concentration will be 0,300M, In the next 726s the concentration will be 0,150M. Thus, thae time it takes to decrease concentration until 0,150M is 726s×2= 1452 seconds

c) In the same way, 11072 years are 4 half-life for this reaction, thus:

0,345M/2⁴ = 0,02156 M

d) By definition of half-life, the less half-life, the faster rate. Thus, The faster rate is for the reaction A.

By (1) half-life is inversely proportional to rate constant. Thus, the less half-life, the largest rate constant. The largest rate constant, k, is for A reaction

I hope it helps!

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