CHEMISTRY MIDDLE SCHOOL

what best explains why the use of fossil fuels for energy production is a not a long-term solution to the world's energy needs?

Answers

Answer 1
Answer: We can't use fossil fuels forever, someday we will run out of coal for example.

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MgCl2 +?gLl2CO3 →75gMgCO3 +135gLiCl34gsolve this

Ok another chemistry question! This is another question that I can)t solve

Answers

Hey there!

NaHCO₃

Notice that there is no subscript under Na.

That means there is one atom of Na for each molecule of NaHCO₃.

Hope this helps!

Why were the proton and electron discovered before the neutron

Answers

The proton and electron were discovered before the neutron because the proton and electron contain energy and charges. Hope this helped.

Is it possible to make CD without plastic? why or why not?

Answers

No, it is not possible to make CD by other material except plastic.

The full form of CD is compact disks. It is simple disk of plastic

Why CD made up of plastics ?

  • The CD is made up of plastic mainly with polycarbonate plastic (PC) .
  • The PC is stronger  and mechanically more stable. CD must be stronger enough to resist any mechanical damage like scratching.
  • The PC are quite temperature and and impact resistance and highly transparent.
  • It provides the disc depth necessary to maintain laser focus on the metal and data layer.
  • The surface of the CD is reflective because it is coated with thin layer of aluminium and sometimes gold .

learn about Aluminium

brainly.com/question/14958942

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No, its not possible because mostly substances are not durable also u can take an example of iron. if we make a cd of iron then rusting occurs
hope it helps u

Which planet has a thick atmosphere, which is mainly composed of carbon dioxide? A. Mars B. Mercury C. Earth D. Venus

Answers

The answer is D.) Venus
i think is a mars because there is no oxygen any earth but i think is mars 

When wood is burned is this a physical or chemical change ?

Answers

It’s a physical change

Answer:

physical

Explanation:

no chemical reaction is occurring

How can you increase and decrease the viscosity of a liquid?

Answers

you can increase and decrease the viscosity of liquids by raising or lowering the temperature
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Dan wants to test the effects of different amounts of antibiotic on bacteria. While setting up his experiment he makes sure to use the same type of antibiotic, the same type of bacteria, and the same type of incubator for each trial. Which phrase below best describes this part of the experiment?A. analyzing resultsB. collecting dataC. choosing controlled variablesD. making a prediction
When an electric kettle containing cold water is switched on, the water in it starts boiling after a few minutes. What is the source of the heat energy of the boiling water? (3 points)a. Mechanical energy from the power socket b. Newly created energy that increased the total energy c. Mechanical energy from the heating element in the kettle d. Already existing energy that was present in some other form
Atomic size generally______.A. decreases as you move from top to bottom within a groupB. remains constant within a periodC. decreases as you move from left to right across a periodD. increases as you move from left to right across a period​
Where are gummy bears made?