# Chemistry

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How many moles of K3PO4 are required to react completely with 4.5 moles of CaCl2

2K3PO4 + 3CACl -> Ca3(PO4)2 + 6KCL

• Chemistry -

2K3PO4 + 3CaCl2 -> Ca3(PO4)2 + 6KCL
We use the coefficients in the chemical equation to set up:
(4.5 mol. CaCl2)(2 mol K3PO4 / 3 mol CaCl2) = ?? _____ moles K3PO4
Notice I used DOUBLE labels. Do the unit cancellation which can't be shown here.

NOTE: The above method I used is called the unit factor, factor label, or dimensional analysis method. All chemistry textbooks show it in the answered examples. I highly recommend it.

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