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2 years ago

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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READING CHECK

Wittaler [7]

Gas particles are in constant motion, and any object in motion has kinetic energy (Ek). ... For example, in the collision of two molecules, one molecule may be deflected at a slightly higher speed and the other at a slightly lower speed, but the average kinetic energy does not change.
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2 years ago

Calcium carbide reacts with water to produce acetylene gas according to the following equation: CaC2(s) + 2H2O(l)C2H2(g) + Ca(OH

poizon [28]

Answer:

33.7

Explanation:

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2 years ago

An isotope of potassium with a half-life of roughly one billion years is often used in radioactive dating. This isotope decays t

melisa1 [442]

Answer : The chemical symbol for the element that results from this process is, (Ar) for argon.

Explanation :

Electron capture : In this decay process, a parent nuclei absorbs an electron and gets converted into a neutron. Simply, a proton and an electron combines together to form a neutron. Mass number does not change in this process.

$_Z^A\textrm{X}+_{-1}^0\textrm{e}\rightarrow _{Z-1}^A\textrm{Y}$

The equation for the given reaction is,

$_{19}^{40}\textrm{K}+_{-1}^0\textrm{e}\rightarrow _{18}^{40}\textrm{Ar}$

Thus, the chemical symbol for the element that results from this process is, argon (Ar).

7 0

3 years ago

Which of the following is a mixture steel water oxygen or gold

MAXImum [283]

Steel is an alloy and consists of more than one element (mainly iron and carbon), therefore steel is a mixture.

7 0

2 years ago

Calculate the mean rate of reaction when 23 cm of gas is produced in 15 seconds.

katrin2010 [14]

Answer:

1.53 cm/s

Explanation:

Rate = Length/time

= 23/15

= 1.53 cm/s

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1 year ago