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Phantasy [73]
3 years ago
12

The word igneous comes from the Latin word for fire. However, the name is inaccurate. The rocks are not created with flames. Ins

tead, they are created when magma cools and hardens. Magma is hot molten rock found deep in the earth. Igneous rock is either intrusive or extrusive. It is intrusive when it forms inside the earth's crust. It is extrusive when it is formed above the earth's surface.
Select the sentence from the passage that supports the idea that temperature is an important factor in the formation of igneous rock.
Question 10 options:

Instead, they are created when magma cools and hardens.

The word igneous comes from the Latin word for fire.

Magma is hot molten rock found deep in the earth.

It is intrusive when it forms inside the earth's crust.
Chemistry
2 answers:
GuDViN [60]3 years ago
7 0

Answer:

Instead, they are created when magma cools and hardens —> the temperature contributes as the magma would be at extreme heat while it need a cooler temperature to harden and mold

Explanation:

Fiesta28 [93]3 years ago
5 0
Instead, they are created when magma cools and hardens —> the temperature contributes as the magma would be at extreme heat while it need a cooler temperature to harden and mold
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Determine the oxidation state of nitrogen in lino3.
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Answer : The oxidation state of nitrogen in LiNO_3 is, (+5)

Explanation :

Rules for the oxidation numbers :

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  • The oxidation number of a monatomic ion equal to the charge of the ion.
  • The oxidation number of  Hydrogen (H)  is +1.
  • The oxidation number of  oxygen (O)  in compounds is usually -2, but it is -1 in the peroxides.
  • The oxidation number of a Group 1 element in a compound is +1.
  • The oxidation number of a Group 2 element in a compound is +2.
  • The oxidation number of a Group 17 element in a binary compound is -1.
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The given compound is, LiNO_3

Let the oxidation state of 'N' be, 'x'

(+1)+x+3(-2)=0\\\\x=+5

Hence, the oxidation state of N is, (+5)

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Zinc phosphide, Zn3P2, is often used as a rat poison. Phosphorus has 5 valence electrons. Assuming that phosphorus is following
Nadya [2.5K]

Answer:

Two electrons each!

Explanation:

The question pretty much requires us to find the oxidation number of Zinc in the compound.

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