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SCORPION-xisa [38]
3 years ago
5

As an environmental engineer how would you apply the process of separating mixtures to clean up a polluted beach? What would you

do first? Second? Third? What equipment would you need? Explain your process.
Chemistry
1 answer:
nikdorinn [45]3 years ago
6 0
I did this already and i put this down :3 <span>first you would separate each part of the beach into three zones one for basic cleaning another for harder work and then animal searching and cleaning and release, after that you would begin to work on the sections one by one using certain tools and a large amount of effort being used, then finally you end with a cleaned up beach clean water and safe animals and happy faces from people as well.</span>
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If E is the symbol for an element, which two of the following symbols represent isotopes of the same element?
UNO [17]

Answer: A and D

Explanation: isotopes must have same atomic number but different mass number due to the difference in their Neutron number

7 0
3 years ago
Please help thank you!
insens350 [35]
South east should be the answer
7 0
3 years ago
Crystals a. grow inward from a seed. b. have an orderly internal arrangement of atoms organized in a lattice pattern. c. display
Andreyy89

Answer:

Option (B)

Explanation:

Crystals are usually defined as those substances that are comprised of atoms, ions, and molecules, and they are oriented in a very well-developed and ordered microscopic structure. These crystals are interlinked to one another by strong chemical bonds, namely the metallic, covalent, ionic and Vander Waals bond. In nature, these crystals form when any liquid undergoes cooling and solidifies.

The study of crystals is commonly known as crystallography and is directly associated with the minerals.

Thus, the correct answer is option (B).

4 0
3 years ago
What variable is assumed to be constant when using the combined gas law?
drek231 [11]
That would be pressure.
7 0
3 years ago
A solution is prepared by mixing 769 mL of ethanol with 507 mL of water. The molarity of ethanol in the resulting solution is 10
blsea [12.9K]

Answer:

57 mL

Explanation:

To make things clear, when 769 mL of ethanol were mixed with 507 mL of water, the resulting volume was not (769+507) 1276 mL, but a lower value. This is because of the interactions between liquid molecules.

First we<u> calculate how many grams of ethanol are there in 769 mL</u>, using the <em>given density</em>:

  • mass = density * volume
  • 0.7893 g/mL * 769 mL = 606.97 g ethanol

Then we<u> convert 606.97 g of ethanol into moles</u>, using its<em> molar mass</em>:

  • 606.97 g ÷ 46.07 g/mol = 13.17 mol

Now we <u>calculate the actual volume of the solution</u>, using the <em>definition of molarity</em>:

  • Volume = Moles / Molarity
  • 13.17 mol / 10.8 M = 1.219 L

Finally we <em>convert 1.219 L to mL</em>, and <u>calculate the difference in volume</u>:

  • 1.219 L * 1000 = 1219 mL
  • 1276 mL - 1219 mL = 57 mL
4 0
3 years ago
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