Question

Дано T1=27 градусов P1=240кПа T2=100 градусов V= const P2?

Answer 1

P/T=const
p1/T1=p2/T2
T1=27°=300k
T2=100°=373k
240/300=p2/373
240*373=300*p2
p2=298,4кПа

Answer 2

To find the value of P2, we can use the combined gas law, which states:

(P1 * V1) / T1 = (P2 * V2) / T2

Where: P1 = Initial pressure (240 kPa) V1 = Initial volume (const, so we don't need its value) T1 = Initial temperature (27 degrees Celsius) T2 = Final temperature (100 degrees Celsius) P2 = Final pressure (unknown)

Let's plug in the values and solve for P2:

(240 kPa * V1) / (27°C) = (P2 * V1) / (100°C)

V1 cancels out from both sides as it is constant.

240 kPa / (27°C) = P2 / (100°C)

Now, we need to convert the temperatures to Kelvin since the gas law requires absolute temperature:

T1 in Kelvin = 27°C + 273.15 = 300.15 K T2 in Kelvin = 100°C + 273.15 = 373.15 K

Now, the equation becomes:

240 kPa / 300.15 K = P2 / 373.15 K

To find P2, we'll solve for it:

P2 = (240 kPa / 300.15 K) * 373.15 K

P2 ≈ 298.42 kPa

Therefore, the approximate value of P2 is 298.42 kilopascals.