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Sedaia [141]
2 years ago
7

Which sample is most likely to undergo the smallest change in temperature upon the absorption of 100 kJkJ of heat

Chemistry
1 answer:
lapo4ka [179]2 years ago
4 0

Answer:

Corresponde a la sesi�n de GA 4.5 UN PEQUE�O AUMENTO

La dilataci�n se define como el aumento de las dimensiones de un cuerpo cuando �ste absorbe calor. A excepci�n del agua, que se contrae cuando su temperatura aumenta de 0 hasta 4 �C. Cuando un cuerpo absorbe calor, sus mol�culas adquieren mayor energ�a cin�tica y ocupa mayor espacio; en consecuencia, el cuerpo aumenta sus dimensiones, el espacio que se da entre las mol�culas es conocido como coeficiente de dilataci�n y para cada material es diferente.

De los estados de la materia el s�lido es el que se dilata menos en comparaci�n con los fluidos, de los cuales el gas se dilata notablemente.

La dilataci�n se considera, de manera general, de tres tipos: lineal, superficial y c�bica.

Dilataci�n lineal

Este tipo de dilataci�n se presenta en cuerpos cuya dimensi�n principal es su longitud y es indispensable considerarla en cables, v�as de ferrocarril o varillas; se calcula por medio de un instrumento llamado pir�metro de cuadrante.

Graphics

Cuando dos varillas de diferente material son calentadas de 25 �C a 68 �C se observa que las dos aumentan su tama�o, pero no en la misma proporci�n. El incremento de tama�o de cada varilla, cuando su temperatura se eleva un grado celsius, se conoce como coeficiente de dilataci�n y se define como el aumento que experimenta un cuerpo por cada grado cent�grado que su temperatura aumente.

La dilataci�n lineal que experimenta un cuerpo cuando se calienta depende b�sicamente de tres factores, que son:

a) longitud inicial Graphics

b) incremento de temperatura Graphics

c) coeficiente de dilataci�n Graphics

La relaci�n matem�tica de estos tres factores establece la igualdad:

Graphics

Ejemplo:

�En cu�nto aumentar� su longitud un alambre de cobre cuya longitud inicial es de 100 m, si la temperatura var�a de -15 �C a 32 �C? El coeficiente de dilataci�n del cobre es de Graphics

Explanation:

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7 0
3 years ago
Consider the balanced equation below.
Karo-lina-s [1.5K]

The correct option is (a) H₂S : SO₂ = 2 : 2 and O₂ : H₂O = 3 : 2

<h3>What is molar Ratio ?</h3>

Molar ratio also known as stoichiometry is the ratio in which the reactants and products are either formed or reacted in the given equation

the balanced equation is as follows ;

2H₂S + 3O₂ --> 2SO₂ + 2H₂O

molar ratio can be determined by the coefficients of the compounds in the balanced reaction.

coefficient is the number in front of the chemical compound

coefficients for the compounds in this reaction are as follows ;

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therefore, correct option is (a) H₂S:SO₂ = 2:2 and O₂:H₂O = 3:2

Learn more about molar ratio here ;

brainly.com/question/17920577

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Answer:

Hailey the answer is D.

Explanation:

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Answer:

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Explanation:

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