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what is the empirical formula of the following:

1. K=52.4%, Cl=47.6
2. Na=16.2 %, Mn=38.7%, O=45.1%
3. H=37%, P=37.8%, O=58.5%
4. K=56.6%, C=8.7%, O=34.7%
5. C=10.04%, H=0.84%, Cl=89.12%