Calculate the mass of CO2 in a mixture

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SUMMARY

The discussion focuses on calculating the mass of CO2 in a gas mixture containing 1.5 kg of N2 and 1 kg of O2, with a total pressure of 1.5 bar, volume of 2 m³, and temperature of 293 K. The user successfully applied the ideal gas law (PV=nRT) to determine the number of moles of gases present and subsequently calculated the mass of CO2 by rearranging the equation to isolate nCO2. The solution involved understanding the relationship between the total moles of gas and the individual components in the mixture.

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Homework Statement



I need to calculate the mass of CO2 in a mixture where there is 1.5kg of N2 and 1kg of O2 present. The total pressure of the mixture is 1.5bar, the volume is 2m^3 and the temperature is 293K. I also know the cv values for the constituents.

Homework Equations



I know lots of equation but they none of them are for just one unknown.

The Attempt at a Solution



I have tried finding the volumetric analysis of the mixture but it all depends on knowing that one mass which I can't find?

Thanks
 
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How many moles of nitrogen and oxygen are present? How many moles of ideal gases need to be present in that volume to produce the given pressure?
 


Thanks, I sorted it in the end using the equation Pv=nRT, rearranged to find n and then knowing that sum of n=n02+nN2+nCO2. Rearranged to find nCO2 and then converted back to mass. Pretty sure that's what you suggested anyway.
Thanks
 

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