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Elza [17]
3 years ago
13

What are the main organs for the respiratory system?

Chemistry
1 answer:
liubo4ka [24]3 years ago
5 0

Answer:

lungs and blood vessels, airway

Explanation:

because the respiratory system are a system that helps people breate. the lungs breathe in oxygen and then breathe out carbon dioxide. the blood vessels carries the oxygen into the body to other part of the system in the body that needed oxygen to make glucose.

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What is special about nitrogen and what is its function in the atmosphere
Vladimir79 [104]
Nitrogen makes up 70-80% of the atmosphere. If nitrogen weren't here, we wouldn't be able to breathe in oxygen because of the density of the air and because the air would then be toxic and flammable because there would be too much oxygen in the air. So with nitrogen, we are able to breathe safely. It makes it so we can breathe and keeps the atmosphere at a normal density.
Hope this helps. 
4 0
3 years ago
How many electrons in an atom could have these sets of quantum numbers? n=2?
slavikrds [6]
A maximum of 8 electrons can share the quantum number  n = 2.

Principal Quantum number has a symbol of "n". It tells you the energy level on which an electron resides. Y<span>ou need to determine exactly how many </span>orbitals<span> you have in this energy level before you can determine the number of electrons that can share the value of n.
</span>

The number of orbitals you get per energy level can be found using this formula:

<span>no. of orbitals=<span>n</span></span><span>²</span>

Each orbital can hold a maximum of two electrons, the formula would be:

<span>no. of electrons=2<span>n</span></span><span>²</span>

Using the given formulas:

<span>no. of orbitals = <span>n</span></span><span>² </span><span>= </span><span>2</span><span>² </span><span>= </span><span>4</span>

<span>no. of electrons </span><span>=</span><span>2 *</span><span> </span><span>4 </span><span>= </span><span>8 </span>




6 0
4 years ago
Find the percent composition of water in barium chloride dihydrate. Round your answer to the
nadya68 [22]

Answer: its 15 its none of those

Explanation:

7 0
2 years ago
My teacher hasn’t explained it well enough for me to actually understand it ;(
NISA [10]

Answer:

dang even i cant tell whats going on sorry dude

Explanation:

7 0
3 years ago
3) Ha do vapor aod gases differ?
Neko [114]

Your question, I guess, How do vapour and gases differ...

Answer:

1.) Vapour is the changed state of any liquid either due to boiling or evaporation

2.) Vapour are more energetic as they have absorbed the latent heat of vaporization whereas Gases are low in energy because they are already in gaseous form at room temperature.

3.) Vapour have boiling points above room temperature while gases have their boiling point below room temperature.

6 0
3 years ago
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