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3 years ago

Which best explains how photosynthesis is helpful to humans?

Chemistry

1 answer:

marissa [1.9K]3 years ago

5 0

Answer:

It reduces the amount of harmful rays released by the sun. It increases the levels of carbon dioxide in the air.

Explanation:

<em>PWLS MARK ME BRAINLIEST*</em>

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The highest point is the crest

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3 years ago

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A sample of gaseous neon atoms at atmospheric pressure and 0 °c contains 2.69 * 1022 atoms per liter. the atomic radius of neon

omeli [17]

Explanation

Radius of neon atom : 69 pm = $69\times 10^{-12} m$

Volume occupied by the one atom: $\frac{4}{3}\pi r^3$

$=\frac{4}{3}\times 3.14\times(69\times 10^{-12} m)^3=1.37\times 10^{-30} m^3$

given that $2.69\times 10^{22}$ atoms are present in 1L

1 L = 0.001 $m^3$

The volume occupied by the $2.69\times 10^{22}$ neon atoms

$2.69\times 10^{22}\times 1.37\times 10^{-30} m^3=3.68\times 10^{-8} m^3$

Fraction of volume occupied by the neon atom:

$=\frac{3.68\times 10^{-8} m^3}{0.001 m^3}=3.68\times 10^{-11} m^3$

$3.68\times 10^{-11} m^3$

The fraction of of volume occupied by the neon atom is very less than the 1 L which indicates the presence of large amount of empty space between the atoms of the gas.

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3 years ago

The major use of carbon dioxide

lidiya [134]

Answer:

Carbon dioxide is used as a refrigerant, in fire extinguishers, for inflating life rafts and life jackets, blasting coal, foaming rubber and plastics, promoting the growth of plants in greenhouses, immobilizing animals before slaughter, and in carbonated beverages.

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3 years ago

Net Ionic Equation of potassium phosphate (aq) + barium chloride (aq) --> ?

ivolga24 [154]

The answer would be B since it forms a solid

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3 years ago

What is ejected from the nucleus during alpha decay?

Aloiza [94]

Hi

Alpha decay is a type of radioactive decay.
So, when Alpha decay goes through a process called "radioactive process", two neutrons and two protons comes together and is ejected from the nucleus of a radioactive atom.

Hope this helped :)

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3 years ago

Which best explains how photosynthesis is helpful to humans?​

Which best explains how photosynthesis is helpful to humans?