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MaRussiya [10]
3 years ago
10

Sarah is researching the Indigenous plant and animal populations around her city. She has identified one area that is home to so

me very rare
species. How could she preserve the land for future generations?
Chemistry
1 answer:
Sever21 [200]3 years ago
7 0

Answer:

sdg

Explanation:

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All substances freeze at the same temperature, so they all have exactly the
Anastasy [175]

Answer:

I think it would be false

Explanation:

All things have a unique freezing/melting point

6 0
3 years ago
4. A 0.51 kg solution contains 87 mg of potassium iodide. Calculate the W/W concentration
anzhelika [568]

Taking into account the definition of percentage composition, the percent composition of potassium iodide in this sample is 0.017%.

<h3>Definition of percent composition </h3>

The Percentage Composition is a measure of the amount of mass that an element occupies in a compound and indicates the percentage by mass of each element that is part of a compound.

To calculate the percentage of composition, it is necessary to know the mass of the element in a known mass of the compound.

<h3>Percentage Composition in this case</h3>

In this case, you know that a 0.51 kg (or 510000 mg, being 1 kg= 1000000 mg) solution contains 87 mg of potassium iodide.

Dividing the mass amount of potassium iodide present in the compound by the mass of the sample and multiplying it by 100 to obtain a percentage value, the percentage composition of potassium iodide is obtained:

percentage composition of potassium iodide=\frac{87 mg}{510000 mg} x100

<u><em>percentage composition of potassium iodide= 0.017%</em></u>

Finally, the percent composition of potassium iodide in this sample is 0.017%.

Learn more about percent composition:

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3 0
2 years ago
Name three ways in which unicellular organisms can move. Describe one of them.
Viefleur [7K]

Answer:

Unicellular organisms achieve locomotion using cilia and flagella. By creating currents in the surrounding environment, cilia and flagella can move the cell in one direction or another.

Explanation:

3 0
3 years ago
Read 2 more answers
Which of the following explains how Hahn, Strassman, and Meitner tried to
attashe74 [19]

Answer is: A. They opposed the use of energy released during nuclear fission for military purposes.

Hahn, Strassmann and Meitner were not engaged in nuclear weapons research during World War II.

Otto Hahn (1879 - 1968) became a passionate campaigner against the use of nuclear energy as a weapon.

Hahn and Strassmann discovered nuclear fission (nuclear fission of uranium in 1939).

5 0
3 years ago
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Is acid rain corroding a statue an example of physical weathering
muminat

Answer:

Acid rain's effect on stone is a chemical change.

Explanation:

Acid rain has hydrochloric acid which reacts with the calcium carbonate in the stone.

I hope this helps. (Sorry if i am wrong)

6 0
2 years ago
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