Calculate the mass in grams of each element in the body of a 57kg person

  1. 1. The problem statement, all variables and given/known data
    The natural abundaces of elements in the human body, expressed as a percent by mass, are oxygen (o) 65%; carbon (C), 18%; hydrogen (H), 10%; nitrogen (N), 3.0%; calcium (Ca), 1.6%; phosphorous(P), 1.2%; all other elements 1.2%

    Calculate the mass in gram of each element in the body of a 57-kg person


    2. Relevant equations

    this involves unit conversions 1000grams=1kg
    don't know what else


    3. The attempt at a solution

    i am clueless
     
  2. jcsd
  3. Borek

    Staff: Mentor

    What does it mean 35% of something?
     
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