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2 years ago

9

Un alambre de hierro se tendió entre dos paredes fijas resistentes, estando la temperatura a 150 ºC ¿A qué temperatura se romper

á el alambre al enfriarse?

1 answer:

Tomtit [17]2 years ago

3 0

Answer:

Explanation:

porfa respondan

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Answer:

1449 K

Explanation:

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If you seal a container of air at room temperature (20.0 degrees celcius) and then put it in the refrigerator (2.00 degrees celc

zheka24 [161]

The pressure inside the container will be <u>9.39×10⁴Pa</u>

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If air in a container is sealed at 20⁰C at a pressure equal to the atmospheric pressure and cooled to 2.00⁰C, the pressure inside the container falls.

Convert the temperature in Celsius to Kelvin.

$T_1=20.0^oC+273.15=293.15K\\T_2=2.00^oC+273.15=275.15K$

Use the expression for the pressure law.

$\frac{P_2}{P_1} =\frac{T_2}{T_1}$

Substitute 100,000 Pa for P₁, 293.16 K for T₁ and 275.15K for T₂.

$\frac{P_2}{P_1} =\frac{T_2}{T_1}\\ P_2=P_1(\frac{T_2}{T_1})\\ =(100,000Pa)(\frac{275.15K}{293.15K} )\\ =9.386*10^4Pa$

The pressure in the container (correct to 2 sf) is <u>9.39×10⁴Pa</u>

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2 years ago