A disruption to an established ecosystem can lead to:

Chemistry

1 answer:

Ilya [14]4 years ago

4 0

Answer:

D.) changes in the populations of the community

Explanation:

Any disruption of any ecosystem always leads to some changes, some minor ones, some dramatic ones. All of the organisms living in a particular ecosystem are adapted to live in the conditions that it provides, so when a change occurs it causes a big stress on the populations. Depending on the change that has occurred, it can cause changes in the populations, or it can even cause extinction to some populations.

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How many moles of Na2Cr2O7 contain 14 moles of oxygen atoms?

sergiy2304 [10]

The number of moles of sodium dichromate from the number of moles of oxygen atoms can be determined through stoichiometry. Using the molecular formula of the compound, Na2Cr2O7, 1 mole of the compound contains 7 moles of oxygen. Hence, 14 moles O2*(1 mole Na2Cr2O7/ 7 mole O2) is equal to 2 moles <span>Na2Cr2O7.</span>

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4 years ago

Read 2 more answers

A process stream contains 450 mol/s benzene and 375 mol/s toluene. Calculate the mole fraction of benzene in the process stream.

Tema [17]

Answer:

0.5455

Explanation:

The moles of benzene in the process stream in 1 sec = 450 moles

The moles of toluene in the process stream in 1 sec = 375 moles

So, according to definition of mole fraction:

$Mole\ fraction\ of\ benzene=\frac {n_{benzene}}{n_{benzene}+n_{toluene}}$

Applying values as:

$Mole\ fraction\ of\ benzene=\frac {450}{450+375}$

<u>Mole fraction of benzene in the process stream = 0.5455</u>

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4 years ago

Please help again. Sorry!>♡

Svet_ta [14]

Matter is found every where in the universe and there is never any substance in the universe that is not composed of matter.

<h3>What is matter?</h3>

Matter is anything that has weight and occupy space. We know that matter is present in every part of the universe. Everything in the universe is composed of matter. Matter forms the basics of our study of the universe. Water, food cloths everything all are composed of matter.

The fact that matter inundates the universe has made the study of matter an unavoidable topic. As such, we can not really be able to point something that is of made up of matter. There can be no such thing!

As long as a thing does exist in the material universe, that thing is made up of matter. Look at yourself for example, matter is spread all across your body. The same occurs in the bodies of every other living thing.

The nonliving things are not also left out as they are equally composed of diverse kinds of matter that exists in the universe.

Learn more about matter:brainly.com/question/28487167

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2 years ago

What kind of change is a change in state of matter and why<br> Physical or chemical

Maru [420]

Answer:

physical

Explanation:

Common changes of state include melting, freezing, sublimation, deposition, condensation, and vaporization. I hope this helps. :)

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