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  1. Z

    physics binding energy plz help

    plz help about this one tooo
  2. Z

    physics binding energy plz help

    can someone explain?
  3. Z

    physics binding energy plz help

  4. Z

    chemistry mcq please helppppppppp

    Walaikumasssalam; thankyou for helping . :)
  5. Z

    Physics Help!! O/N 2010 P4 Qn 1 (c) (ii)

    which variant 41 42 or 43????
  6. Z

    chemistry mcq please helppppppppp

  7. Z

    chemistry mcq please helppppppppp

    June 2002 paper 1 question number 6.
  8. Z

    chemistry mcq please helppppppppp

    can someone explain why the answer is A?
  9. Z

    spirometer....measuring tidal volumes....

    in the spirometer a person breathes O2 from a tube . his nose is clipped and the oxygen comes from a chamber which floats on water. soda lime absorbs CO2 released. this means that the O2 chamber( floating) moves during breathing. these movements are recorded on a kymograph. a kymograph is not...
  10. Z

    A2 bio respirometer

    thanks; can you please explain this: is co2 released measured by the capillary U tube (manometer scale) or is it measured by the 1 cm^3 syringe just above the control tube; I am referring to Fig 15.19 page 209 in black mary jones a level bio book :?
  11. Z

    A2 bio respirometer

    can someone tell me how is it possible to measure CO2 consumption using a respirometer respirometers use co2 absorbents such as soda lime so how are we supposed to measure vol of co2 released during respiration so that a RQ value can be calculated. Thnkx in advance :roll:
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