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Molecular/Formula Mass

  1. Copper (I) chloride, CuCl

    ElementNumberAtomic Mass of Element Total Mass of Element in Compound
    copper163.546 amu63.546 amu
    chlorine135.4527 amu35.4527 amu
    Molecular Mass of compound
    rounded to correct number of sig figs    		98.996 amu

  2. Ammonium sulfide, (NH4)2S

    ElementNumberAtomic Mass of Element Total Mass of Element in Compound
    nitrogen214.00674 amu28.01348 amu
    hydrogen81.00794 amu8.06352 amu
    sulfur132.066 amu32.066 amu
    Molecular Mass of compound
    rounded to correct number of sig figs    		68.143 amu

  3. water, H2O

    ElementNumberAtomic Mass of Element Total Mass of Element in Compound
    hydrogen21.00794 amu2.01588 amu
    oxygen115.9994 amu15.9994 amu
    Molecular Mass of compound
    rounded to correct number of sig figs    		18.0153 amu

  4. hydrochloric acid, HCl

    ElementNumberAtomic Mass of Element Total Mass of Element in Compound
    hydrogen11.00794 amu1.00794 amu
    chlorine135.4521 amu35.4521 amu
    Molecular Mass of compound
    rounded to correct number of sig figs    		36.4606 amu

  5. dinitrogen pentoxide, N2O5

    ElementNumberAtomic Mass of Element Total Mass of Element in Compound
    nitrogen214.00674 amu28.01348 amu
    oxygen515.9994 amu79.9970 amu
    Molecular Mass of compound
    rounded to correct number of sig figs    		108.0105 amu

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