A. forms insoluble calcium and magnesium salts
B. is made from fats and oils
C. has an organic component
D. alters the surface tension of water
E. is a sodium salt of higher carboxylic acids
Correct Answer:
Option A – forms insoluble calcium and magnesium salts
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![A quantity of hot water at 100ºC is added to 400g of water at 10ºC until the temperature of the mixture is 60ºC. Calculate the mass of the hot water added. [Specific heat capacity of water =4200JKg-1 K-1]](https://erudites.ng/wp-content/plugins/contextual-related-posts/default.png "A quantity of hot water at 100ºC is added to 400g of water at 10ºC until the temperature of the mixture is 60ºC. Calculate the mass of the hot water added. [Specific heat capacity of water =4200JKg-1 K-1]")
