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Combustion analysis of a 22.0 mg sample of the painkiller morphine produced 13.2 mg of water. What is the percentage by mass
How many moles of H3PO4 are produced when 20.0 g of HCl are produced by the reaction PCI5 + 4 H2O → H3PO4 + 5 HCI? Select one
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Answer #1

From the above equation- PCL5+ 4H2O--> H3PO4+5HCL the molar ratio between PCL5 and H3PO4 is 1:1 and on the other hand,the molar ratio between PCL5 and HCL is 1:5. So, (20.0g /36.5g )HCl. Now we can write that the number of moles of H3PO4 is ,(20.0g/36.5g)/5 g. So the ans is option (d).

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