Theoretical Maximum Gas Pressure

The equation of state (7.2) can now be applied in estimating the maximum pressure in the firework body, assuming the internal volume to be 4cm.  

Of course, the construction of the hrework dictates that such outrageously high pressures can never be reached and in the normal course of events the hrework body ruptures at a pressure of about 20 atm (300 psi). 

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