Chemistry I am so lost!!! HeLp PLEASE

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Water does not easily remove grease from dirty hands because grease is nonpolar and water is polar; therefore they are immiscible. The addition of soap, however, results in the removal of the grease. Examine the following structure of soap and explain why soap works.

CH_3(CH_2 )_16 C-O^-Na^+
nonpolar tail Polar head sodium stearate a soap

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