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3 years ago

What can an ecosystem sometimes repair itself ?

Chemistry

2 answers:

yawa3891 [41]3 years ago

8 0

Answer:

An ecosystem can be illustrated as a biological community where the non-living and living constituents associate with each other. The cutting of trees is generally done for the use of wood products, and medicines that are obtained from trees and plants. The forests that got cleared is considered as disturbed. The migration of birds and animals takes place to a different location in search of habitat and food.

However, the restoration of clear cut forests can be done as the soil is fertile enough to encourage the development of new plants, that is, the colonization of new plants will occur due to the already present precursors like roots, seeds, and partially trees. The birds and animals again immigrate after colonization of the plants and trees. Thus, the ecosystem will repair itself with the assistance of these precursors.

kozerog [31]3 years ago

3 0

After natural pollution.

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Phosphorus-32 has a half-life of 14.3 days. how many grams of phosphorus-32 remain after 71.5 days if you start with 4.00 grams?

almond37 [142]

Answer : 0.125 g

Explanation : If you are calculating the half life of P-32 which has half life of 14.3 days and you want to calculate how many grams are remaining after 71.3 days if yo are starting with 4 g?

starting you can calculate the number of half life P-32 undergoes first,

which is n = 71.5 / 14.3 = 5 days.

now, to calculate the remaining mass,

$m_{remaining} = (\frac{initial mass}{2 X 2X 2X2 X2 } ) = (\frac{initial mass}{ 2^{5} } )$

= $= \frac{4 g }{ 2^{5} } = 0.125 g$

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3 years ago

How are the Spectra of the gasses Different?

galina1969 [7]

When gasses are heated they emit only certain wavelengths of light (an emission line spectrum). Different gasses emit different wavelengths. A cool object (gas or solid) can absorb some of the light passing through it. The temperature of an object is a measure of how much energy its atoms have.

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4 years ago

How are waves reflected, absorbed, and transmitted through various materials<br>

EastWind [94]

Answer:

Electromagnetic Radiation

Explanation:

When light shines on an object, it is reflected, absorbed, or transmitted through the object, depending on the object's material and the frequency (color) of the light. However, because light can travel through space, it cannot be a matter wave, like sound or water waves.

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3 years ago

How many molecules are in 34.61 grams of sulfur dioxide?

SSSSS [86.1K]

This problem is providing us with the mass of sulfur dioxide and the molecules contained are required. At the end, the result turns out to be 3.252x10²³ molecules, according to:

<h3>Avogadro's number:</h3>

In chemistry, we use the Avogadro's number in order to successfully perform mole-mass-particles calculations. Defined as 6.022x10²³, it provides the number of atoms, molecules and ions in one mole of the substance.

In this case, in order to obtain the result, one first calculates the moles in 34.61 grams of sulfur dioxide and then utilize the Avogadro's number to obtain the number of molecules as shown below:

$34.61gSO_2*\frac{1molSO_2}{64.1gSO_2}*\frac{6.022x10^{23}molecules}{1molSO_2} \\\\3.252x10^{23}molecules$

Learn more about Avogadro's number: brainly.com/question/20091306

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2 years ago

The heat of vaporization of 1-pentanol is 55.5 kj/mol, and its entropy of vaporization is 148 j/k.mol. what is the approximate b

KonstantinChe [14]

As you can see, the unit of heat of vaporization is in kJ/mol, while the unit for entropy of vaporization is in J/mol·K. Since it is vaporization, this occurs at the boiling point. Thus, the formula would be:

Boiling Point = ΔHvap/ΔSvap

Make sure the units are consistent.

Boiling point = 55.5 kJ/mol * 1000 J/kJ / 148 J/mol·K = <em>375 K or 102°C</em>

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3 years ago