Bathtub ring is caused by
A) the action of ammonia with water.
B) precipitation of soap by "hard" metal ions.
C) rust formation from sulfur in the water.
D) soap and water cause a ringing sound in the ears.
Correct Answer:
Verified
Q7: Which of the following statements about soaps
Q8: The majority of household chemicals are
A)cleaning agents.
B)laundry
Q9: Water softeners
A)remove "hard" ions.
B)destroy "hard" ions.
C)modify "hard"
Q10: The substance with the formula shown below
Q11: An advantage of potassium soaps is that
Q13: Sodium carbonate (Na₂CO₃)and potassium carbonate (K₂CO₃)react with
Q14: Washing soda is
A)sodium peroxide.
B)sodium carbonate.
C)sodium borate.
D)sodium chloride.
Q15: Soap can be made by boiling animal
Q16: Water softeners remove all of the following
Q17: Animal fats and vegetable oil can be
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