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lozanna [386]
3 years ago
8

2. How old are the oldest fossils? Oldest rocks?During what period were these found? IT

Chemistry
1 answer:
Andre45 [30]3 years ago
8 0

Answer:

Fossils: 3.5 billion.  Rocks: 4.28 billion

they were found during Haden Eon

Explanation:

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Which symbol can be used to indicate a chemical reaction that takes place in the presence of a catalyst? mc032-1. Jpg mc032-2. J
lys-0071 [83]

The catalyst has been represented with the formula above the arrow in the chemical equation.

The catalyst has been the compound or element in the chemical reaction that helps in the lowering of the activation energy of the system and thereby leads to an increase in the rate of the reaction.

The chemical equation has been represented in the form of the chemical formula of the reactants and the products.

The catalyst has not been consumed in the chemical reaction, thus it has been represented with the formula above the arrow in the chemical equation.

For more information about the catalyst, refer to the link:

brainly.com/question/17052831

8 0
2 years ago
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In a unimolecular reaction with seven times as much starting material as product at equilibrium, what is the value of keq?
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<em>K</em>_eq = 0.14

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3 years ago
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No. The speed of light does change. You mean speed of light in a vacuum. Measuring that value is elementary, in a 2-way measurement, as you show.

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The answer is A hope that helps
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If you were asked to convert 4.2 × 1022 atoms of aluminum to moles, which of the following should you use for the conversion?
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