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2 years ago

Explain why vigorous exercise causes the heart rate to increase and you to also breathe faster.

Chemistry

1 answer:

patriot [66]2 years ago

3 0

Answer:

When you are exercising, your muscles need extra oxygen—some three times as much as resting muscles. This need means that your heart starts pumping faster, which makes for a quicker pulse. Meanwhile, your lungs are also taking in more air, hence the harder breathing.

Explanation:

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alexgriva [62]

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3 years ago

Convert 45.2 g to lbs

dangina [55]

Answer:

0.09964894 pounds

Explanation:

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3 years ago

Subject: Chemistry whoever does this right will give the brainliest <3)

Andru [333]

Answer:

1 A

3 main types of bond are

Ionic bond ( formed due to complete transfer of electron between atoms(

Covalent bond ( formed by mutual sharing of electron)

Metalic bond ( present in the metals due to mobile electrons)

1 B bond in CaO is ionic bond formation in attached image

1 C hydrogen bond with nitrogen is covelent NH3 ammonia is formed because a bond between two non metals is expected to be covalent

More their electronegativity difference between hydrogen and nitrogen is less than 1.7 that makes it covalent

Explanation:

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2 years ago

Read 2 more answers

The solute will dissolve quicker if the solute is more?

Vitek1552 [10]

Answer:

I think D. settled :)

Explanation:

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3 years ago

Read 2 more answers

A chemist needs 0.550 mol selenium for a reaction. What mass of selenium should a chemist use?

-BARSIC- [3]

Answer:

The chemist would require to use 43.43 grams.

Explanation:

In order to solve this problem we need to know how much do 0.550 moles of selenium weigh. To do that we use selenium's molar mass and multiply it by the given number of moles:

0.550 mol * 78.96 g/mol = 43.43 g

The chemist would require to use 43.43 grams.

4 0

2 years ago