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How to calculate pressure (PSI) of a gas in a tank

  1. Feb 14, 2012 #1
    Hello, i don't know if this is the right place to post this question but im sure someone here can help me out. i need to be able to calculate the psi of a gas in a tank, for example lets say i have 3000 liters of hydrogen in a 1 gallon tank, what would the psi be in the tank? the only help i can find on google is that psi=f/a but that doesn't really help me.

    also, i need to be able to calculate how long the gas would flow at a given psi and rate. for example, if a had a 1 gallon tank of hydrogen at 300 psi and it was being released at the rate of 20 liters/min how long would the tank of hydrogen last?

    any help is much appreciated, thank you.
     
  2. jcsd
  3. Feb 17, 2012 #2
    For your 1st question : You need to Find a suitable value of specific volume of hydrogen regardless of corresponding pressure that fills the required volume of yours (i.e 3000 Liters).
     
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