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Nonamiya [84]
2 years ago
8

PLZ HELP PLZ NO WRONG ANSWERS

Chemistry
2 answers:
BigorU [14]2 years ago
4 0

Answer:

it is C

Explanation:

because Potassium iodide (KI) is an ionic compound which is made of the following ions: K+I−

baherus [9]2 years ago
3 0
The answer to the question is D
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A company is developing a new type of airplane that can take off like a helicopter. Before they begin manufacturing the airplane
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C, to make sure the design works as expected.

A prototype is first, typical model of the said product. Hope this helps!

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3 years ago
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Molecules move most slowly in:<br><br> solids<br> liquids<br> gases<br> compounds
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Explain what happens to temperature and energy as molecules move from gas to liquid to solid
aleksley [76]

Answer and Explanation:

As the temperature of the substances increases, the average energy of the molecules increases, and average energy of attraction between the molecules decreases consequently intermolecular spacing between the molecules increases. As a result, a substance change in succession from gas to liquid to solid.

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3 years ago
Is ninhydren test positive for protein?
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5 0
2 years ago
Use calc to determine whether it is possible to remove 99.99% Cu2 by converting it to Cu(s) in a solution mixture containing 0.1
inessss [21]

Answer:

it is possible to remove 99.99% Cu2 by converting it to Cu(s)

Explanation:

So, from the question/problem above we are given the following ionic or REDOX equations of reactions;

Cu2+ + 2e- <--------------------------------------------------------------> Cu (s) Eo= 0.339 V

Sn2+ + 2e- <---------------------------------------------------------------> Sn (s) Eo= -0.141 V

In order to convert 99.99% Cu2 into Cu(s), the equation of reaction given below is needed:

Cu²⁺ + Sn ----------------------------------------------------------------------------> Cu + Sn²⁺.

Therefore, E°[overall] = 0.339 - [-0.141] = 0.48 V.

Therefore, the change in Gibbs' free energy, ΔG° = - nFE°. Where E° = O.48V, n= 2 and F = 96500 C.

Thus, ΔG° = - 92640.

This is less than zero[0]. Therefore,  it is possible to remove 99.99% Cu2 by converting it to Cu(s) because the reaction is a spontaneous reaction.  

7 0
2 years ago
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