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serious [3.7K]
3 years ago
11

In which natural cycle must an important gas in Earth's atmosphere be fixed before plants can use it?

Chemistry
2 answers:
makvit [3.9K]3 years ago
7 0

Answer: Nitrogen Cycle

Explanation:

The nitrogen cycle is one of the most important biogeochemical cycle. It is an essential gas present in the atmosphere.

It is vital for the growth of plants and animals. Animals derive this nutrient by eating plants. But plants cannot take it in the form of nitrogen gas it takes it in different forms.

This is because the nitrogen fixing bacteria fixes nitrogen which means it converts nitrogen in the form which can be used by the plants.

So, the correct answer is nitrogen cycle as it needs to be modified before being used by plants.

Maru [420]3 years ago
5 0
The answer is C . nitrogen cycle
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2 years ago
Match the words to the definitions below.
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Answer:

Explanation:

1. Turns litmus paper blue, taste bitter, donate OH- ions, feel slippery, 8-14 on pH scale.

BASE

BASE: A base is a substance that reacts with water to yield excess hydroxide ions.

Some of its characteristics are:

>It has a bitter taste

>Their aqeuos solutions have a soapy feel

>They have a PH greater than 7

>They turn red litmus paper blue

>They are electrolytes

2. The amount of ions per an amount of solvent. Ex: 10g salt/100g water

CONCENTRATION

Concentration is the amount of solute that can be found in a solution.

3. A lab procedure to deliver a measured volume of solution, generally measured in ml.

TITRATION

Titration is a laboratory procedure that is used to determine the amount of solution that is needed to drive a reaction to completion. It involves adding a solution to a known volume of another solution.

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ACID

An acid is a proton donor, hydrogen ions.

Characteristics:

>Acids turns blue litmus paper red, they have sour taste and easily corrodes metals.

>They have a PH value between 0-6 on the scale.

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6. Logarithmic scale to indicate the amount of hydrogen ions in solution.

PH SCALE

A PH scale is a logarithmic scale that runs from 1-14 and is used to indicate the amount of hydrogen ions in a solution.

7. A chemical (dye created from lichens) that changes color in response to changes in pH.

LITMUS PAPER

Litmus paper is made of dyes created from lichen and it changes its color as PH changes. Acids turns blue litmus paper red while bases changes the color of litmus to blue from red. Litmus test is a popular test for solutions.

8. Acids and bases are added proportionally and result in a chemical reaction that causes the pH of a solution to reach pH 7.

NEUTRALIZATION

Neutralization is the reaction of acids and bases to produce salts and water. The endpoint of neutralization reaction signifies the point at which equal number of bases neutralizes an acid. The PH is 7 at this point.

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See attachment file below.
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