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abruzzese [7]
3 years ago
13

IN SCIENCE :d HELP PLEASE

Biology
1 answer:
murzikaleks [220]3 years ago
7 0

Answer:

ok

Explanation:

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When CO2 combines with water it forms carbonic acid. How does this explain the phenol red result?
Natalka [10]

Answer:

Detail is given below.

Explanation:

First of all we will understand the pH.

pH:

pH is the negative log of hydrogen ion concentration.

pH = -[logH⁺]

It means when the  ions concentration increases pH will be low and when H⁺ concentration ions decreases pH will be greater. The pH range is 0-14.

If the pH is 7 the solution is neutral, if it is less than 7 the solution will be acidic and above 7 the solution is basic.

when CO₂ is added with water carbonic acid is formed and yield H⁺ ions which decreases the pH thus its color changes from red to yellow just like phenolic indicator. When phenol red is added into the acidic solution the color changes from red to yellow.

and when carbon dioxide is take off from photosynthesis process it means H⁺ ions are going to be decreased thus color changes from yellow to red.

3 0
4 years ago
Which statements describe the universe during the big bang? Check all that apply.
Maslowich
We can't answer this question without the applies
7 0
3 years ago
Read 2 more answers
If you are on the top a mountain and drop an apple, it
mr_godi [17]
A. Earth does have a bigger gravitational pull because Planet Earth is huge and it needs and has all the gravity.
8 0
4 years ago
What is the function of a cell wall?
AleksandrR [38]
The cell wall of plants maintains the shape of plant cells, supports and strengthens plants, resists water pressure<span>, controls cell growth, regulates metabolic processes for the plant, acts as a physical barrier for the plant, stores carbohydrates and helps with cell to </span>cell signaling<span>.</span>
7 0
4 years ago
Which type of epithelium lines the inferior portions of the pharynx?
konstantin123 [22]

Answer:

The type of epithelium that lines the inferior portions of the pharynx is stratified squamous epithelium.

Explanation:

The pharynx is a structure made up of muscles and mucous membranes -like many internal organs- that is part of the respiratory system and is an intermediate step in the digestive tract.

This structure has two portions:

  • <em>Upper or nasopharynx </em>
  • <em>Lower, or oropharynx, in contact with the airways. </em>

Some even propose that the borderline surface between the pharynx and larynx can be called the laryngopharynx, due to its tissue structure.

The lower portion of the pharynx is covered by a squamous stratified epithelium, the inner layers of which rest on a basal lamina. The more superficial layers provide protection to the interior of the pharynx against friction, in addition to remaining lubricated by mucous secretion at that level.

Learn more:

Lower portion of the pharynx brainly.com/question/7300121

7 0
3 years ago
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