Question

кислород находится в сосуде вместимостью 0,4 м3 под давление 8,3*10 в 5 Па и при t= 320 К. Чему равна масса газа?

Answer 1

ДАНО:

 V= 0,4 м^3

p= 8,3*10^5 Па

Т= 320 К

М= 32 * 10^-3 кг/моль

НАЙТИ :   m

................................................

pV= mRT / M

m= pVM / RT

m= 8,3*10^5*0,4*32*10^-3 / 8,31*320= 0,039*10^2= 3,9 кг

Answer 2

Calculating the Mass of Gas in a Vessel

To calculate the mass of the gas in the vessel, we can use the ideal gas law equation:

PV = nRT

Where: - P = pressure - V = volume - n = number of moles of gas - R = ideal gas constant - T = temperature in Kelvin

First, we need to rearrange the ideal gas law equation to solve for the number of moles of gas (n):

n = PV / RT

Given: - V = 0.4 m^3 - P = 8.3 * 10^5 Pa - T = 320 K - R = ideal gas constant = 8.314 J/(mol·K)

Now, let's calculate the number of moles of gas using the given values:

n = (8.3 * 10^5 Pa) * (0.4 m^3) / (8.314 J/(mol·K) * 320 K)

n ≈ 127.6 moles

Next, we can calculate the mass of the gas using the molar mass of oxygen, which is approximately 32 g/mol.

Mass = number of moles * molar mass

Mass ≈ 127.6 moles * 32 g/mol

Mass ≈ 4083.2 grams

Therefore, the mass of the gas in the vessel is approximately 4083.2 grams.