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____ [38]
3 years ago
10

Choose all the answers that apply.

Chemistry
1 answer:
Anni [7]3 years ago
3 0

Answer:

I believe it's the lowest portion of the atmosphere

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Given 2Na + Cl2=2NaCl, what is the excess reactant? What is the limiting reactant?
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Answer: The limiting reactant is Na

Explanation:

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Qué clase de alimentos podemos encontrar que contengan oligoelementos como Cromo (Cr), Litio (Li), Selenio (Se), Manganeso (Mn),
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Answer: There are many foods who have trace elements like seafood, legume, vegetables, tomatoes, bananas, eggs, fishes, meat.

Their five mainly functions are accept or receive electrons in redox reactions, act like cathalytic centers which are necessaries to live, control biologics process like the hormon activation and gen expression, provide stability, 3d structures in important molecules.

Explanation: Trace elements participate in redox reactions because they have acid-base components which alkalize o acidify the way, protecting the organism from free radicals.

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Which type of mixture can be separated using a sieve?
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Answer:

D: a heterogeneous mixture with components of varying sizes

Heterogeneous mixture is a combination of substances that doesn't have uniform composition and properties. Just by looking at the mixture you can differentiate the compounds because they are so different. Using a sieve, allows the components with different sizes to separate, while one is retained, the others can pass the holes in the sieve.

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The ground state configuration of fluorine is?
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the correct answer is b it makes the most sense

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Describe what what food web is.​
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Answer: A lot of food chains

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