Recent content by wils0645

  1. W

    Compressed air at high pressure can cause frostbite?

    Thanks, I appreciate it. I was curious.
  2. W

    Compressed air at high pressure can cause frostbite?

    Is it possible to get frostbite from compressed air? How does this happen?
    • wils0645
    • Thread
    • Air Cause Compressed Compressed air High pressure Pressure
    • Replies: 2
    • Forum: Mechanics
  3. W

    Ka for Phosphate Buffered Saline: 6.2E-8 or 1.59E-7?

    Anyone know the Ka for Phosphate Buffered Saline (pH 7.4). I have heard that it is 6.2E-8, but the formula says .008M Na2HPO4, .002M KH2PO4. Using Henderson Haselbalch, [H+] = Ka[KH2PO4]/[Na2HPO4] using pH of 7.4, Ka = 1.59E-7. Which one is correct?
  4. W

    CO2 bubbling in phosphate buffered saline (pH 7.4)

    The tricky part is not all of the CO2 dissolves. CO2 in saline at 25C has a henry constant of 0.0317. Any help would be appreciated.
  5. W

    How do I calculate CO2 output from a compressed air tank with 5% CO2?

    If I have a tank of compressed air with 5% CO2 and 95% air, and I know the flow rate coming out of the tank is 0.01 LPM, how do I determine the number of [moles/L] of CO2 coming out of the tank?
  6. W

    CO2 bubbling in phosphate buffered saline (pH 7.4)

    I bubbled 5% CO2 through a needle into 30 mL of PBS open to atmosphere (25C) for approximately one hour and reduced the pH from 7.40 to 6.48. I was wondering if I can find the concentration of CO2 in the solution over time with one known (pH) using the Henderson-Haselbalch equation? I am...
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