If the total pressure of the mixture is 1.55 atm

, calculate the partial pressure of the blue gas

Without knowing the partial pressures of the other gases in the mixture, we cannot determine the partial pressure of the blue gas.

The partial pressure of a gas is the pressure that gas would exert if it alone occupied the volume of the mixture at the same temperature.
To calculate the partial pressure of the blue gas, we need to know the mole fraction of the blue gas in the mixture and the total pressure of the mixture.
If we have this information, we can use the formula:
Partial pressure of blue gas = Mole fraction of blue gas x Total pressure.