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nadya68 [22]
3 years ago
8

Can you guys help me I really need help ! Just started this 6th grade I really need help I’m use to this

Chemistry
1 answer:
NeX [460]3 years ago
5 0

Answer:

Mechanical - Freezing & Thawing, Acid Rain, Flowing Water, oxidation

Chemical - Rusting, abrasion

Explanation:

hope this helps!

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Describe how you would obtain a beaker of pure water from salty water
Maslowich

Answer:

You can boil or evaporate the water and the salt will be left behind as a solid. If you want to collect the water, you can use distillation. This works because salt has a much higher boiling point than water. One way to separate salt and water at home is to boil the salt water in a pot with a lid.

Explanation:

4 0
3 years ago
For a theoretical yield of 2.97 g and percent yield of 93.4452%, calculate the actual yield for a chemical reaction. Answer in u
MariettaO [177]

Answer:

2.77532244 grams

Explanation:

Percent yeild=actual/theoretical * 100

Plug in the values

93.4452=actual/2.97 *100

0.934452*2.97=2.77532244

3 0
3 years ago
Which electromagnetic radiation on the electromagnetic spectrum can be detected by the human eye?
qaws [65]

Answer:

D. Visible Light

Explanation:

D is the right answer because visible light is perceived by humans as color and the rest aren't visible at all. For example, if you broke a bone and have to have an X-ray done, you can't see the x-rays. When you are heating something in the microwave, you can't see the waves. And when you are listening to the radio in the car, you also can't see the waves.

4 0
3 years ago
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Describe the current model of the atom. Name the parts of this model and describe each part.
aivan3 [116]

Answer:

the electron cloud model is the current model of atom

7 0
3 years ago
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Los hidrocarburos son compuestos organicos en cuyas moléculas contienen ....?
Misha Larkins [42]

Hydrogen and carbon atoms

Explanation:

Hydrocarbons are molecules that are made up of hydrogen and carbon atoms only.

They are made up of covalent bonds between the carbon and hydrogen atoms.

There is a wide range of hydrocarbons due to the unique properties of carbon.

Most of the hydrocarbons comes from crude oil, natural gas and coal.

When hydrocarbons burn, they produce water and carbon dioxide alone.

They are used as fuel in industrial processes because they produce heat energy.

learn more:

Hydrocarbons brainly.com/question/6126420

#learnwithBrainly

3 0
4 years ago
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