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Shtirlitz [24]
3 years ago
15

What are alveoli and what do they do?

Chemistry
2 answers:
zlopas [31]3 years ago
6 0
Alveoli are tiny sacs within our lungs that allow oxygen and carbon dioxide to move between the lungs and bloodstream
Ilya [14]3 years ago
6 0
Are tiny sac with our lungs that allow oxygen and carbon dioxide to move between the lungs and blood stream
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Which type of substance ionizes completely and creates hydronium ions when dissolved in water?
maw [93]

Answer:

Strong acid

Explanation:

An acid is a substance that interacts with water to produce excess hydroxonium ions in an aqueous solution.

Hydroxonium ions are formed as a result of the chemical bonding between the oxygen of water molecules and the protons released by the acid due to its ionisation. This makes aqueous solution of acids conduct electricity.

A strong acid is one that ionizes almost completely. Examples are:

1. Hydrochloric acid

2. Tetraoxosulphate (VI) acid

3. Trioxonitrate (V) acid

4. Hydroiodic acid

5. Hydrobromic acid

8 0
3 years ago
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a student claims the change in average global air temperatures is a result of burning fossil fuels. Explain whether the students
Sonja [21]
Sharks exhibit a great diversity in their reproductive modes. There are oviparous (egg-laying) species and viv
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Why is your body going through physical and chemical changes?
Thepotemich [5.8K]

Answer:

Physical and chemical changes can occur almost everywhere, even in our bodies! Food must be broken down into a form that our cells can use. When we eat, our bodies physically break down food into small pieces. Our bodies also chemically break down those small pieces of food into tiny organic molecules.

Explanation:

6 0
3 years ago
Cream of tartar creates a white-purple flame when burned. What can you hypothesize is a component of the cream
antiseptic1488 [7]

Potassium can be a component of the cream.

<h3>Why does potassium show white-purple flame when burned?</h3>

An element's presence can be determined using a flame test. The potassium in cream of tartar is what gives it its white-purple color.

Low ionization enthalpy elements allow the flame to display color. Due to low ionization enthalpy, when an element is heated, its valence electrons are quickly excited to higher orbits and emit light as they return to their original orbit. Salts of potassium emit a white-purple color when ignited. The cream of tartar's chemical formula is KC₄H₅O₆.

Learn more about flame test here:

brainly.com/question/22043426

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4 0
3 years ago
Please help me I don’t understand this !!!
alexira [117]

Answer:

The real answer for a is-He(helium)4,002602

The answer for b is-Mg(Magnesium) 24.305

3 0
3 years ago
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