ans it please especially the last one
Attachments:
![](https://hi-static.z-dn.net/files/de8/d00e710c74ac68d629ffc021b8a220fe.jpg)
Answers
Answered by
4
Answer:
3.Calcium and magnesium ions in hard water react with the higher fatty acids of soap to form an insoluble gelatinous curd, thereby causing a waste of the soap. This objectionable reaction does not take place with modern detergents
Similar questions