A mixture og gases has a total pressure off 28.3 atm, it is made of: 5.8 atm of hydrogen gas, 7.2 atm of nitrogen gas, 3.5 atm of oxygen gas and some amount of methane. What is the pressure of methane? what is the pressure of methane in kPa?
Ptotal = pH2 + pN2 + pO2 + pCH4.
Substitute and solve for pCH4 in atm and convert to kPa.
To find the pressure of methane in the mixture, we need to subtract the sum of the pressures of hydrogen gas, nitrogen gas, and oxygen gas from the total pressure.
Let's calculate the pressure of methane:
Total pressure - (Hydrogen gas pressure + Nitrogen gas pressure + Oxygen gas pressure) = Pressure of methane
P(methane) = Total pressure - (P(hydrogen) + P(nitrogen) + P(oxygen))
P(methane) = 28.3 atm - (5.8 atm + 7.2 atm + 3.5 atm)
P(methane) = 28.3 atm - 16.5 atm
P(methane) = 11.8 atm
So, the pressure of methane in the mixture is 11.8 atm.
To convert the pressure from atm to kPa, we can use the following conversion factor:
1 atm = 101.325 kPa
Now, let's calculate the pressure of methane in kPa:
Pressure of methane (kPa) = Pressure of methane (atm) * Conversion factor
Pressure of methane (kPa) = 11.8 atm * 101.325 kPa/1 atm
Pressure of methane (kPa) ≈ 1194.05 kPa
Therefore, the pressure of methane in kPa is approximately 1194.05 kPa.