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3 years ago

4. ¿Cuál es la resistencia de un alambre de

Chemistry

1 answer:

Artemon [7]3 years ago

5 0

Answer:

R=0.0438 Ω

Explicación:

1) Hallar el área o sección del conductor de cobre, usando esta fórmula:

A=π.r² (Pi x radio al cuadrado)

Debido a que conocemos el diámetro (1.5mm) su radio es la mitad de esto es decir 0.75mm, y lo sustituimos en la fórmula:

A=π.(0.75mm)²

A=π(0.5625mm²)

A=1.7671mm²

2) La resistividad del cobre es: rho = 0,0172 y la incluimos en la fórmula siguiente:

R=p

R=0,0172Ω x

Simplificamos:

El resultado es:

R=0.0438 Ω

Explanation:

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anyanavicka [17]

Answer:

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Explanation:

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3 years ago

An ion with an atomic number of 34 and 36 electrons has a __________ charge

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3 years ago

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3 years ago

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3 years ago

Which of the following below is the complete ionic equation of the reaction: Calcium nitrate and sodium sulfide solutions react

3241004551 [841]

To find the net ionic equation we must first write the balanced equation for the reaction. We must bear in mind that the reagents Ca(NO3)2 and Na2S are in the aqueous state and as product we will have CaS in the solid state, since it is not soluble in water and NaNO3 in the aqueous state.

The balanced equation of the reaction will be:

$Ca(NO_3)_{2(aq)}+Na_2S_{(aq)}\rightarrow CaS_{(s)}+2NaNO_{3(aq)}$

Ca(NO3)2(aq) + → Ca(aq) + 2Na(s)NO3Now, c(aq)ompounds in the aqueous state can be written in their ionic form, so the reaction will transform into:Na2S +

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So, the answer will be option A

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1 year ago