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Mashcka [7]
3 years ago
15

Notice in the picture of sedimentary rocks, there is one layer on top of the other. The oldest rocks are on the bottom of the pi

le and the youngest or most recent rocks are on the top of the pile. This is known as the law or principle of
A) superposition.

B) horizontality.

C) uniformatarianism.

D) cross cutting relationships.

Chemistry
1 answer:
amm18123 years ago
3 0

Answer:

A. Superposition

Explanation:

A law of geochronology, stating that in any undisturbed sequence of rocks deposited in layers, the youngest layer is on top and the oldest on bottom, each layer being younger than the one beneath it and older than the one above it.

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Given:
Be - Beryllium   -   9,3227
C   - Carbon      - 11,2603
O   - Oxygen      - 13,6181
Ne - Neon          - 21,5645
B   - Boron          -   8,298
Li  - Lithium        -   5,3917
F   - Fluorine      - 17,4228
N   - Nitrogen    - 14,5341

Arranged from highest ionization energy to lowest ionization energy.

Ne ; F ; N ; O ; C ; Be ; B ; Li
5 0
3 years ago
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In the
sweet-ann [11.9K]

Answer:

The acid must be a concentrated acid

Explanation:

Ethene is prepared in the laboratory by heating ethanol with excess concentrated tetraoxosulphate VI acid at 170°C . The reactionoccursc in two stages;

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2) The compound formed in the first step is heated in the presence of excess concentrated sulphuric acid to give ethene and sulphuric acid.

The overall reaction can be perceived as the dehydration of ethanol. The gas produced (ethene) is usually passed through sodium hydroxide solution to remove any gaseous impurities present.

concentrated sulphuric acid is used in this process since it is a good dehydrating agent.

7 0
3 years ago
An object with a mass of 5.6 g raises the level of water in a graduated cylinder from 25.1 mL to 33.9 mL. What is the density of
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Answer:

0.6364 g/cm^3

Explanation:

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Answer:

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There are important differences between the properties of a mixture and a compound. In this table, the column Mixture refers to the gasses hydrogen and oxygen, and the column named Compound refers to water.

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Cellular division has three main functions: (1) the reproduction of an entire unicellular organism, (2) the growth and repair of tissues in multicellular animals, and (3) the formation of gametes (eggs and sperm) for sexual reproduction in multicellular animals.

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