Hello; i'm having a bit of difficulty with a problem here;(adsbygoogle = window.adsbygoogle || []).push({});

Compressed helium, supplied through a throttle at a pressure of 10 bar and a temperature of 350K, is used to charge a 5 litre gas cylinder. Initially the cylinder contains helium at pressure of 2 bar and a temperature of 290K. Given that the heat loss from the cylinder is negligible during this process, calculate how many mol of helium are added to the contents of the cylinder. refer to;

W + Q = (delta)Ub - (delta)M(ha) + (delta)Mg(zb-za) - 1/2(delta)M(Ca)^2

Where W is the shaft work, Q the heat input between points a and b, Ca is the speed at a and ha is the enthalpy per kg at a.

Any help would be greatly appreciated! thank you

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# Homework Help: Thermodynamics help

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