Question

Объём газа увеличился от 3 литров до 8 л. Работа, совершаемая газом, равна 120 Дж. Найти давление газа.

Answer 1

P = A / ΔV 

A - работа ( 120 Дж ) 
ΔV - разность объёмов ( 8 л - 3 л = 5 л = 0,005 м³ ) 

p = 120 / 0,005 = 24000 Па = 24 кПа 

Answer 2

Calculation of Gas Pressure

To find the pressure of the gas, we can use the ideal gas law equation, which states that the pressure of a gas is directly proportional to its temperature and the number of gas molecules, and inversely proportional to its volume.

The ideal gas law equation is given by:

PV = nRT

Where: - P is the pressure of the gas - V is the volume of the gas - n is the number of gas molecules (in moles) - R is the ideal gas constant - T is the temperature of the gas (in Kelvin)

In this case, we are given the initial volume of the gas (3 liters) and the final volume of the gas (8 liters). We are also given the work done by the gas (120 J).

To find the pressure of the gas, we need to calculate the change in volume and use it in the ideal gas law equation.

The change in volume (ΔV) can be calculated by subtracting the initial volume from the final volume:

ΔV = V2 - V1 = 8 L - 3 L = 5 L

Now, let's substitute the values into the ideal gas law equation:

P * ΔV = n * R * T

Since we are not given the number of gas molecules (n) or the temperature (T), we cannot directly calculate the pressure using this equation.

Therefore, without additional information, we cannot determine the pressure of the gas.

Please provide any additional information if available, such as the number of gas molecules or the temperature, to calculate the pressure of the gas accurately.