Gravimetric stoichiomerty . eh? HELP

  1. gravimetric stoichiomerty..... eh? HELP

    calculate the mass of iron(III) oxide (rust) produced by the reaction of 500g of iron with oxygen from the air

    so i have no idea what do do here, my teacher sucks monkeys balls.

    so i thought to do the mass of iron(III) oxide divided by the 500g but i know thats wrong. PLEASE HELP ME! I actually have no idea of what im suppose to do.
  2. jcsd
  3. Borek

    Staff: Mentor

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