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3 years ago

I will give you 50 pts

Chemistry

2 answers:

LekaFEV [45]3 years ago

8 0

An aquarium and Lake Erie can be their own ecosystem .

Option a and c

<u>Explanation:</u>

An ecosystem is a "community of living organisms" where there is an interaction between the non-living components of the environment and the living components i.e. living organisms, plants, animals, etc. acting as a system.

In the question above, An Aquarium will have its own ecosystem since it is an artificial ecosystem and the organisms present in it are selective and maintained in a restricted environment. While Lake Erie has its own natural ecosystem where all the Aquatic components are in conjunction with each other.

STatiana [176]3 years ago

5 0

Answer:

aquarium and Lake Erie and a dead tree

Explanation:

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+ oxygen carbon dioxide + water + energy <br><br> Sunlight <br> Sugar<br> Oxygen <br> Carbon

alukav5142 [94]

Sunlight will be the answer
may be

(if you will provide a little more information about your question.....

it will be easy to give the answer)

8 0

4 years ago

Which of the following is/are considered alcohols?

Paladinen [302]

Answer: THE ANSWER IS D

Explanation:

an alcohol is a hydrocarbon chain with an hydroxyl group (OH)

A, B, AND C ARE ALL ALCOHOLS, SO THE ANSWER IS D

6 0

3 years ago

Which of the following is not an example of a molecule A. O₃ B. F C. H₂O₂ D. NCI₃

exis [7]

The correct option is B. F

Hope this helps

-AaronWiseIsBae

4 0

4 years ago

What is the mole fraction of sodium chloride in solution that is 13. 0 y mass sodium chloride and that has a density of 1. 10 g/

lyudmila [28]

Mole fraction is the ratio of the constituent moles to the total constituents. The mole fraction of sodium chloride is 0.0443.

<h3>What is a mole fraction?</h3>

A mole fraction is the proportion of the moles of the component in a total component present.

In 100 gm of solution 13.0 5 means, there is 13.0 gm of sodium chloride present. The mass of water is calculated as,

100 - 13.0 = 87.0 gm

Moles of sodium chloride is calculated as:

$\begin{aligned} \rm moles &= \rm \dfrac{mass}{molar\; mass} \\\\&= \dfrac{13}{58}\\\\&= 0.224 \;\rm moles\end{aligned}$

Moles of water are calculated as:

$\begin{aligned} \rm moles &= \rm \dfrac{mass}{molar\; mass} \\\\&= \dfrac{87}{18}\\\\&= 4.83\;\rm moles\end{aligned}$

Now, moles fraction is calculated by dividing moles of sodium chloride by total moles as,

$\begin{aligned} \text{Mole fraction of NaCl} &= \dfrac{0.224}{0.224 + 4.83}\\\\&= 0.0443\end{aligned}$

Therefore, the mole fraction of sodium chloride is 0.0443.

Learn more about mole fraction here:

brainly.com/question/8076655

#SPJ4

7 0

2 years ago

What is carbonic acid and how does it affect rock?

Vadim26 [7]

<span>Carbonic acid is a chemical compound with the chemical formula H₂CO₃. It is also a name sometimes given to solutions of carbon dioxide as it contains water. It affects the rock by a process. When water meets carbon-dioxide in the air, a weak solution occurs called "CARBONIC ACID" and when it meets the crack of the rock, it diffuses and it ti dissolve with it. HOPED THIS HELPS YOU :)</span>

7 0

3 years ago