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chemistry

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a piece of iron reacts with sulfuric acid and produces 250 dm^3 hydrogen gas at 27 degree celsius temperature and 99.99 kPa. Find out the mass of that piece of iron?

  • chemistry - ,

    Fe + 2HCl ==> FeCl2 + H2

    Use PV = nRT to solve for n = mols gas.
    Convert mols H2 to mols Fe (it's 1:1 so mols H2 = mols Fe).
    Convert mols Fe to g. g = mols x atomic mass.

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