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Homework Help Forum: Chemistry

Posted by Peter on Sunday, November 1, 2009 at 9:19pm.

a 22.5g sample of (NH4)2CO3 (ammonium carbonate) contains_____ moles of ammonium ions.

A. o.468
b. 0.288
C. 0.234
d. 2.14
e. 3.47

  • Chemistry - DrBob222, Sunday, November 1, 2009 at 9:23pm

    moles (NH4)2CO3 = grams/molar mass.
    Then moles NH4^+ will be twice that since there are two NH4^+ ions in one molecule of (NH4)2CO3.

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