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3 years ago

Which of the following is a source of dissolved substances in the ocean?

Chemistry

2 answers:

alina1380 [7]3 years ago

8 0

$\boxed{{\text{Chemical weathering of rocks}}}$ is a source of dissolved substances in the ocean.

Further Explanation:

More than 70 % of earth’s surface is occupied by water that is obtained from various seas and oceans. Water in the oceans not only contains pure water, but has several other substances present in it. These substances include different chemicals like sodium chloride, sulfates, potassium, calcium, and magnesium.

When evaporation of ocean water occurs, it removes water from it and salt is left behind so it results in an increase in the salinity of ocean water but cannot act as source of dissolved substances present in water of seas and oceans.Excretions of marine organisms result in secretion of nitrogenous substances and are efficient in water removal from the rectum. Melting of icebergs and sea ice has no effect on the sea level as they were already present inside it.

The process by which large and big rocks are broken down due to various chemical reactions of water and other substances in it is called chemical weathering of rocks. Five major types of chemical weathering include carbonation, oxidation, dehydration, hydration and hydrolysis. When rain pours down, it gets mixed with carbon dioxide of air and carbonic acid is produced, which then flows down and reacts with rocks. This leads to dissolution of some parts of rocks and hence chemical weathering of rocks acts as source of dissolved substances in water.

Hence option a is correct.

Learn more:

Identify the phase change in which crystal lattice is formed: brainly.com/question/1503216
The main purpose of conducting experiments: brainly.com/question/5096428

Answer details:

Grade: Senior School

Subject: Chemistry

Chapter: Chemistry in everyday life

Keywords: water, ocean, sea, chemical weathering, evaporation, 70 %, carbonation, hydrolysis, hydration, dehydration, oxidation, dissolved substances.

kari74 [83]3 years ago

3 0

The best answer among the choices given is option A. Chemical weathering of rocks is a source of dissolved substances in the ocean. It is a process that involves the erosion of rocks due to chemical reactions by water and substances dissolved in the water. Therefore, it most likely the source of dissolved substances.

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frosja888 [35]

Answer:

Answers are in the explanation

Explanation:

Precision and accuracy are both statistical concepts. Precision is about how close are the measured values to each other. Accuracy is closeness of the measured values to a specific value or reference value.

There are many ways to calculate precision and accuracy, one is stimating precision as Relative Uncertainty and accuracy as Relative Error.

Formulas are:

Relative Uncertainty: Standard desviation / Measured value.

Relative Error: Measured Value - Expected Value / Expected value

Measured value is the aveage of the values.

For student 1:

Mean = 25

Standard desviation = 1.5275

Relative Uncertainty: 1.5275 / 25

Relative Uncertainty: 0.061

Relative Error: 25 - 20 / 20

Relative Error: 0.25

For student 2:

Mean = 24.5

Standard desviation = 0.5477

Relative Uncertainty: 0.5477 / 24.5

Relative Uncertainty: 0.02

Relative Error: 24.5 - 20 / 20

Relative Error: 0.225

As the student 2 has a low Relative error and uncertainty, you can say student 2 is more accurate and precise

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3 years ago

Please and thank you

Virty [35]

3.8mL of 0.42 phosphoric acid is required.

Reaction

2H3PO4 + 3CaCL3 → Ca3(PO)4 + 6HCl

moles CaCl2 =0.16 mol/L x0.010 L = 0.0016 mol

moles of H3Po4

= 0.0016mol of CaCl2 x 2 mole of H3PO4/3mole of CaCl2

= 0.00106 mol

V of H3PO4 = 0.0016/0.42 = 0.0038L = 3.8mL

V of H3PO4=3.8mL

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2 years ago

Atoms of a substance are rearranged _______.

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3 years ago

In 1838, botanist Matthias Schleiden, determined that all plants are composed of cells. In 1839, anatomist Theodor Schwann propo

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Answer:

This question is incomplete; the complete part is:

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D) All cell can develop into any other type of cell.

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Explanation:

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BartSMP [9]

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