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Marat540 [252]
3 years ago
6

At constant pressure, which of these systems do work on the surroundings? Check all that apply.

Chemistry
1 answer:
lana66690 [7]3 years ago
6 0
I believe the correct answers from the choices listed above are the second and the last option. At constant pressure, the systems 2A(g) + B(g) ---> 4C(g)  and 2C(g) A(s) + B(s) ---> C(g) produces work to the surroundings. <span>When a gas is evolved during a chemical reaction, the gas can be imagined as displacing the atmosphere - pushing it back against the atmospheric pressure. The work done is therefore V*P where V is the volume of gas evolved, and P is the atmospheric pressure. </span>
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Hola!

En este caso, debemos recordar que la adición de agua incrementa el volumen donde se encuentra un soluto disuelto, el cual posee una cantidad de materia constante. De este modo, sabiendo que la densidad es:

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Al incrementar el denominador (volumen), la densidad experimenta una disminución, al estar en relación inversamente proporcional.

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