Engineering Final volume of a gas using the ideal gas equations

[Krokodrile]

Homework Statement

An oxygen cylinder contains 1 ft^3 gas at `70 F and 200 Psig. What will the volume of the gas be if it passes into a receptacle of dry gas at 90 F and 0.3 inHg above atmospheric pressure? The barometer indicates 14.7 In/lb^2

Relevant Equations

P1V1/T1 = P2V2/T2

Hey there! for this problem i try to use the combinate gas ecuation. First of all the values its necesary to have it in absolutes:
70 F = 527.67 K
90 F = 549.67 K
The ecuation looks like: (200 psig) (1 ft^3)/529.67 K = (0.3 InHg) V2/549.67 K I can eliminate "K" but not psig with InHg for obtain the ft^3 of V2.

And i don't know for what its the value of the barometer.

 

[Chestermiller]

Is this the exact wording of the problem?

 

[Krokodrile]

Is this the exact wording of the problem?

yes, it is. The word-word statement. Meanwhile i try to resolved, i noticed that if don't have a mase or a volume value in the second gas i can't obtain all the values of that gas. But, yes, its the exact wording of the problem say be the teacher. So, i guees that its possible to resolve

 

[Chestermiller]

yes, it is. The word-word statement. Meanwhile i try to resolved, i noticed that if don't have a mase or a volume value in the second gas i can't obtain all the values of that gas. But, yes, its the exact wording of the problem say be the teacher. So, i guees that its possible to resolve

Well, in my judgment, there is not enough information provided to answer this question.

 

[Krokodrile]

Well, in my judgment, there is not enough information provided to answer this question.

Yes. i agree. Maybe if the second gas had mass i wold to use V = mRT/P, but this is not the case. I don't find any formule of the gases for resolve the problem. Maybe the teacher forget the mass or he volume value. This is my opinion, but, i would like know your opinion about why its not enogh information and have a more idea for comment it in the class.

 

[Tom.G]

Also, your temperature conversions need correcting.