CHEMISTRY HIGH SCHOOL

How do electrons populate atoms?

Answers

Answer 1
Answer: Electrons fill the electron orbitals (s, p, d, or f) starting from the lowest energy level going to the highest energy level. I hope this helps. let me know if you need more information such as what the

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True or false? Most salts found in the ocean originated on land

Answers

Answer:

false \

explaintion

then wound pond and lakes be salt water

The salt in the ocean mainly comes from runoff from the land and openings in the seafloor. So, I would say false.

Describe events in the formation of an evaporite?

Answers

* Alcohol, in function of its defined chemical, evaporates much faster than a water.

* The clothes drying on the Clothesline, the river that evaporates, a puddle of water that dry, etc.

hope this helps!

Use the periodic table or graphic in lesson. Choose the correct electron configuration of carbon. 1s22s22p1 1s22s22p4 1s22s22p2 1s22s12p2

Answers

Use the periodic table or graphic in lesson. The correct electron configuration of carbon is 1s22s22p2 
1s22s22p2
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You find that the unknown powder contains the illegal drug cocaine. If someone where to ask you to determine the purity of the substance, what would they mean? Why is purity important in crime investigations?

Answers

The substance is not composed entirely of cocaine, it is mixed with other materials. The purity refers to what percentage of the powder is cocaine, and what percentage is other materials.
Purity can be important in crime investigations to find out the samples value, and to pair it with previously found samples of equal purity to deduce that they came from the same source.

Answer:

If some would ask me to determine the purity of an unknown powder that contains illegal drugs like cocaine, they would probably be wanting to remove other substances that are added like baking soda, and the reason this is so important is that sometimes the ingredients they get to mix with have an effect on the test and may miss lid the results.

Explanation:

Unicellular organisms are made up of many different cells.

True

False

Answers

False - the answer is in the name. “Unicellular” means one cell.

In which type of solution does an equilibrium always exist?

Answers

You could argue that any solution with water in it has an equilibrium in it of some sort.  If a solution is over saturated there is an equilibrium between the dissociated and solid solute (for example NaCl(s)⇄Na⁺(aq)+Cl⁻(aq) when in water).  Even if the solution is not over saturated, water always has the reaction 2H₂O(l)⇄H₃O⁺(aq)+OH⁻(aq) since water can act as both an acid and a base (this reaction is also always at equilibrium and the equilibrium constant is 1×10⁻¹⁴).

Since we usually ignore the autoionization of water (unless dealing with acid base chemistry), I think the answer your teacher is looking for is over saturated solutions.

I hope this helps.  Let me know if anything is unclear or if you need a different answer. 
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