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3 years ago

13

What is circulatory role and funcation

1 answer:

Stella [2.4K]3 years ago

4 0

Answer:

Transport of gases and nutrients

Explanation:

The circulatory system includes all the vessels that transport blood around the body as well as the blood itself. Sometimes the heart and lungs are also included as part of the circulatory system.

The vessels of the circulatory system are involved in the transport of blood throughout the body. Blood carries the necessary gases to the cells (oxygen) and waste products (CO2) away. It also carries important nutrients to the cells and transports chemical messengers in the form of hormones to their sites of action.

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C(S)+O2(g)-->CO2(g)

soldi70 [24.7K]

<u>Answer:</u> The correct answer is 1.18 g.

<u>Explanation:</u>

We are given a chemical equation:

$C(S)+O2(g)\rightarrow CO_2(g)$

We know that at STP conditions:

22.4L of volume is occupied by 1 mole of a gas.

So, 2.21L of carbon dioxide is occupied by = $\frac{1}{22.4L}\times 2.21L=0.0986mol$ of carbon dioxide gas.

By Stoichiometry of the above reaction:

1 mole of carbon dioxide gas is produced by 1 mole of carbon

So, 0.0986 moles of carbon dioxide is produced by = $\frac{1}{1}\times 0.0986=0.0986mol$ of carbon.

Now, to calculate the mass of carbon, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

Moles of carbon = 0.0986 mol

Molar mass of carbon = 12 g/mol

Putting values in above equation, we get:

$0.0986mol=\frac{\text{Mass of carbon}}{12g/mol}\\\\\text{Mass of carbon}=1.18g$

Hence, the correct answer is 1.18 g.

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3 years ago

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What's the answer to this question?

Blizzard [7]

The answer should be d

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4 years ago

You buy butter $3.31 a pound one portion of onion compote requires 1.7 oz of butter how much does the butter for one portion cos

Lorico [155]

Answer:

The butter for one portion cost is $0.35.

Explanation:

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The melting point of chromium is 1890. The melting point of argon is -189. Suggest a reason for this difference.

DanielleElmas [232]

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Different forces between atoms and difference in structure.

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Avogadro’s number is a constant that helps scientists count atoms and molecules. It is approximately equal to 602,200,000,000,00

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3 years ago

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