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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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Roman55 [17]

second compound

Let molar mass of x is = X

Let molar mass of y is = Y

Moles of x in second compound = Mass / molar mass = 7 / X

Moles of y in second compound = Mass / molar mass = 4.5 / Y

For second compound

7 / X : 4.5/ Y = 1:1

Therefore

X / Y = 7/4.5

Y / X = 4.5/ 7

The mass of x in first compound = 14g

moles of x in first compound = 14/X

Mass of y in first compound = 3

moles of y in first compound = 3 / Y

14 / X : 3/ Y = 14Y / 3X = 14 X 4.5 / 3 X 7 = 3 :1

Thus molar ratio in first compound = moles of x / Moles of y = 3:2

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3 years ago

You need to make an aqueous solution of 0.207 M calcium acetate for an experiment in lab, using a 300 mL volumetric flask. How m

jeka94

Answer:

We have to add 9.82 grams of calcium acetate

Explanation:

Step 1: Data given

Molarity of the calcium acetate solution = 0.207 M

Volume = 300 mL = 0.300 L

Molar mass calcium acetate = 158.17 g/mol

Step 2: Calculate moles calcium acetate

Moles calcium acetate = molarity * volume

Moles calcium acetate = 0.207 M * 0.300 L

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1. Use the following equation:

fenix001 [56]

Answer:

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