Answer:
Grease and oil are non>polar and insoluble in water. These fatty acids are less soluble than the sodium or potassium salts and form a precipitate or soap dirt. Because of this, soaps are ineffective in acidic water. Also, soaps form insoluble salts in hard water, such as water containing magnesium, calcium, or iron.
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Answer:7 atom of carbon+5atom of hydrogen +3atom of nitrogen +6 atom of oxygen =21
Answer:
3) H-O
Explanation:
because oxygen and hydrogen have very high difference in electronegativity
