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fredd [130]
2 years ago
7

Select all the statements that are TRUE about igneous rocks:

Chemistry
1 answer:
Leya [2.2K]2 years ago
7 0

Answer:

Intrusive rocks are formed by slow cooling lava/magma.

Igneous rocks are always formed from lava/magma.

Explanation:

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A solution of which of the following coordination compounds will form a precipitate when treated with aqueous AgNO3?
lidiya [134]

Answer:

[Cr(NH3)6.]C13

Explanation:

Alfred Werner's coordination theory (1893) recognized two kinds of valency;

Primary valency which are nondirectional and secondary valency which are directional.

Hence, the number of counter ions precipitated from a complex depends on the primary valency of the central metal ion in the complex.

We must note that it is only these counter ions that occur outside the coordination sphere that can be precipitated by AgNO3.

If we consider the options carefully, only [Cr(NH3)6.]C13 possess counter ions outside the coordination sphere which can be precipitated when treated with aqueous AgNO3.

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3 years ago
Express the number 4.80x10-1 in standard form
rosijanka [135]
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aleksandr82 [10.1K]

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Add the atomic mass of each element present. (If there is more than one atom of an element, multiply the element's atomic mass by the number of that element's atoms.)

8 0
3 years ago
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elena-14-01-66 [18.8K]

Of course they are small

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The only way you can see them is by a microscope or a lens and can be anywhere.

8 0
3 years ago
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Nostrana [21]
Quantitative is anything that is relating to a number value. Think “quantity”

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