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Darina [25.2K]
2 years ago
5

Describe the heart and it’s function

Chemistry
2 answers:
AnnZ [28]2 years ago
8 0

Answer:

The human heart is an organ that pumps blood throughout the body via the circulatory system, supplying oxygen and nutrients to the tissues and removing carbon dioxide and other wastes.

Explanation:

Hope this helped! Good luck on whatever it is you're working on!

artcher [175]2 years ago
3 0

Answer:

The heart is a cardiac muscle,which is specialized to pump blood powerfully and efficiently throughout our entire life time.

Explanation:

I really hope this helps.

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What is the first quartile of the following data set?
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Answer:

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Explanation:

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The swimmer moves her hand down and to the left and her body goes forward
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Answer:Newton’s first law

Explanation:

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2 years ago
How many moles of oxygen are necessary to generate 28 moles of water, according to the following equation: 2H2+O2→2H2O
valentinak56 [21]

The number of moles of oxygen required to generate 28 moles of water from the reaction is 14 moles

<h3>Balanced equation </h3>

2H₂ + O₂ —> 2H₂O

From the balanced equation above,

2 moles of water were obtained from 1 mole of oxygen

<h3>How to determine the mole of oxygen needed </h3>

From the balanced equation above,

2 moles of water were obtained from 1 mole of oxygen

Therefore,

28 moles of water will be obtained from = 28 / 2 = 14 moles of oxygen

Thus, 14 moles of oxygen are needed for the reaction

Learn more about stoichiometry:

brainly.com/question/14735801

5 0
1 year ago
You place a balloon in a closed chamber at STP. When the balloon doubles in size, what happens to the chamber pressure? A.) The
larisa86 [58]
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4 0
3 years ago
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A solution is prepared by dissolving 38.6 g sucrose (C12H22O11) in 495 g of water. Determine the mole fraction of sucrose if the
stiks02 [169]

Answer:

4.09×10⁻³ is the mole fraction of sucrose

Explanation:

Mole fraction = Moles of solute or solvent/ Total moles

Let's convert the mass to moles (mass / molar mass)

38.6 g / 342 g/m = 0.113 moles of sucrose

495 g / 18 g/m = 27.5 moles of water

Total moles = 0.113 m + 27.5 m = 27.0613 moles

Mole fraction of sucrose = Moles of sucrose / Total moles

0.113 m / 27.0613 moles = 4.09×10⁻³

8 0
2 years ago
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