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SCORPION-xisa [38]
3 years ago
6

11. Is the following sentence true or false? Geologists have identified about 300minerals. *​

Chemistry
1 answer:
gogolik [260]3 years ago
3 0

Answer:

Research has shown that this is true.

Explanation:

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I think it’s c bc it makes more sense
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The field lines around one end of a bar magnet are shown below.
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Answer:

<em>The correct option here would be the third one because it is true. </em>

Explanation:

The diagram shows a bar magnet that has lines that are parallel to each other and are pointing towards one side of the rectangle.

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8. Which of the following are reasons why Index fossils are chosen for determining ages of rocks? Select all that apply .
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Answer:

B. Distributed over a very wide range

D. Limited life existence in geologic time.

Explanation:

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Help please chemistry question
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Answer:

D. K_{a} = \frac{[\text{H}^{+}][\text{NO}_{2}^{-}]}{[\text{HNO}_{2}]}

Explanation:

The general form of an equilibrium constant expression is

K = \frac{[\text{Products}]}{[\text{Reactants}]}

In the equilibrium

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The products are H⁺ and NO₂⁻, and the reactant is HNO₂.

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The correct answer is B. When temperature decreases the cold water is more dense due to molecules being stiffened together.

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