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ollegr [7]
2 years ago
10

Si escuchas a alguien decir que la corriente eléctrica en un sircuito sale por el polo negativo de la pila y entra por el polo p

ositivo ¿a cual sentido de la corriente eléctrica se está refiriendo? A) al sentido convencional de la corriente eléctrica. B) al sentido real de movimiento de electrones.
Chemistry
1 answer:
Mrac [35]2 years ago
8 0

Answer:

It refers to the conventional sense of the elastic current

Explanation:

It is the traditional or the conventional sense of the elastic current as in the earlier days the experimenters and the scientist thought that the current moves out of the positive terminal or pole of the battery and enters through the negative pole or terminal of the battery.

It is because of the direction of the current flow as thought in early days, the sentence refers to the conventional sense.

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What's the charge on Ni in the compound NiCi3? *
ss7ja [257]

Answer:

+3

Explanation:

Chlorine is anion with a -1 charge. But they are three chlorine atoms.

-1 * 3 = -3

So they have a -3 charge.

So to balance the compound, the nickel has to be a cation with a +3 charge.

-3 + 3 = 0

Furthermore, a chemical bond always has a 0 charge. Remember that.

Hope it helped! Rate my answer a 5 star if correct.

8 0
3 years ago
If 0.25 moles of KBr is dissolved in 0.5 liters of
Len [333]

Answer:

[KBr] = 454.5 m

Explanation:

m is a sort of concentration that indicates the moles of solute which are contianed in 1kg of solvent.

In this case, the moles of solute are 0.25 moles.

Let's determine the mass of solvent in kg.

Density of heavy water, solvent, is 1.1 g/L and our volume is 0.5L.

1.1 g = mass of solvent / 0.5L, according to density.

mass of solvent = 0.5L . 1.1g/L = 0.55 g

We convert the mass to kg → 0.55 g . 1kg /1000g = 5.5×10⁻⁴ kg

m = mol/kg → 0.25 mol /5.5×10⁻⁴ kg = 454.5 m

6 0
2 years ago
What is hair made out of and how does it grow ? lol yah ik its kind of a stupid question
Rasek [7]
Hair is dead skin cells that pile on top of each other to "grow".

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What is one reason that scientists who study weather need extremely advanced technology?
Anton [14]

Answer: C) To monitor weather event restricted several days in advance.

Explanation:

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