The scum formed when soap is mixed with hard water could ...
The scum formed when soap is mixed with hard water could be
calcium trioxocarbonate (IV)
propane- 1, 2, 3 - triol
calcium hydrogentrioxocarbonate (IV)
magnesium tetraoxosulphate (IV)
calcium stearate
Correct answer is A
No explanation has been provided for this answer.
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