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Radda [10]
3 years ago
8

Which structure of the respiratory system connects the pharynx to the trachea?

Chemistry
2 answers:
Citrus2011 [14]3 years ago
8 0

Answer:

Larynx

Explanation:

It is a cartilaginous structure inferior to the laryngopharynx that connects the pharynx to the trachea and helps regulate the volume of air that enters and leaves the lungs.

muminat3 years ago
6 0
Larynx connects the pharynx to the trachea and is also part of the respiratory system
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Answer:

I think its C I am sorry if I am wrong

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Write the chemical formula for
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The numbers are in subscript
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The density of gas particles in a section of Earth’s atmosphere decreases. Which of the following is the most likely explanation
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3 years ago
Which of these elements is unlikely to have a reaction with any element or compound?
Kay [80]
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8 0
3 years ago
Someone please do this!!!
Lilit [14]

Answer:

1) Fe = 69.9%

O = 31.1%

2) H = 5.19%

O = 16.5%

N = 28.9%

C = 49.5%

Explanation:

One easy way to do percent compositions is to assume you have 100g of a substance.

1) Lets say we have 100g of Fe2O3.

The total molar mass would be:

= 55.845*2+15.999*3 = 159.687

The molar mass of the Fe2 alone is:

=55.845*2 = 111.69

Thus, the grams of Fe2(out of a 100) could be calculated by multiplying 100g * the molar mass ratio of Fe2 to the whole:

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Which is approximately 69.9%.

We can find the amount of O3 by simply subtracting, as the rest of the compound is made of O3. Thus, the % composition of O3 is 31.1%

You can then do this same process to the next question, getting us the following:

H = 5.19%

O = 16.5%

N = 28.9%

C = 49.5%

4 0
3 years ago
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