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Umnica [9.8K]
3 years ago
12

As the heart contracts, oxygenated blood is pumped from the left atrium to the left ventricle through which valve?

Chemistry
1 answer:
son4ous [18]3 years ago
7 0

It closes as the left ventricle contracts, preventing blood from returning to the left atrium; thereby, forcing it to exit through the aortic valve into the aorta. The left atrium receives oxygenated blood from the lungs through the pulmonary vein.

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What is the balanced equation and type of reaction for: <br> Copper metal+aqueous silver nitrate
Gnesinka [82]

Answer:

Cu(s) + 2AgNO3(aq)→Cu(NO3)2(aq)+2Ag(s)

This chemical equation means:

One mole of solid copper plus two moles of aqueous silver nitrate produce one mole of copper(II) nitrate plus two moles of solid silver.

This is a single replacement reaction in which the metal copper replaces the metal silver.

3 0
2 years ago
If you were to travel from the surface to the center of Earth, the temperature would
nataly862011 [7]

Answer:

increase dramatically(a lot).

Explanation:

The core of the earth is way way way hotter than the surface.

5 0
3 years ago
If you burn 50.6 g of hydrogen and produce 452 g of water, how much oxygen reacted?
Svetllana [295]
Acc. to Law of Conservation of Mass
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Let mass of Oxygen be x.
So,
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=401.4 g
4 0
4 years ago
What is the difference between a purine and a pyrimidine?
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Purines are 2 Ring or Carbon Ring, Nitrogen containing bases. That consist of these 2 rings next placed next to each other. These examples include - Adenine and Guanine.

Pyrimidines are 1 or single Ring Nitrogen containing structures. There are 3 nitrogenous bases that are categorized as pyrimidines. Cytosine, Thymine, and Uracil.

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A substance made of metal atoms only?
SVEN [57.7K]
It has to be a metal, it can't be anything else.
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