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barxatty [35]
2 years ago
7

What is the source of all food energy on Earth?

Chemistry
2 answers:
Nuetrik [128]2 years ago
3 0

Answer:

C : producers

Explanation:

mart [117]2 years ago
3 0
I agree with what the person above said
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JulijaS [17]

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3 years ago
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If oxygen is removed from a sample of air as iron nusts, what happens to the partial pressure of oxygen in the air?
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It increases because the less oxygen the more pressure there will be on that specific object

Explanation:

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3 years ago
Complete the table below by deciding whether a precipitate forms when aqueous solutions A and B are mixed. If a precipitate will
stiks02 [169]

The reaction between copper II chloride and sodium sulfide as well as lead II nitrate and potassium sulfate both produce precipitates.

The solubility of a substance in water is in accordance with the solubility rules.  It is possible that a solid product may be formed when two aqueous solutions are mixed together. That solid product is referred to as a precipitate.

Now, we will consider each reaction individually to decode whether or not a precipitate is possible.

  • In the first reaction, we have; CuCl2(aq) + Na2S(aq) ---->CuS(s) + 2NaCl(aq). A precipitate (CuS) is formed.
  • In the second reaction, Pb(NO3)2(aq) + 2KNO3(aq) ----> PbSO4(s) + KNO3(aq), a precipitate PbSO4 is formed
  • In the third reaction, NH4Br(aq) + NaOH(aq) ----->NH3(g)  + NaBr(aq) + H2O(l), a precipitate is not formed here.

Learn more: brainly.com/question/11969651

6 0
3 years ago
Convert 798.2 g/m' to kg/cm' using dimensional analysis.
Katyanochek1 [597]

Answer:

798.2 grams / meter = 0.008 kilograms / centimeter

Explanation:

4 0
2 years ago
Which is the most important factor in determining the state of a substance?
Contact [7]
Temperature, that's the most important factor
3 0
3 years ago
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