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Earlier discussion
3 older comments kept for context.
Nwaneri Stephen
The answer is B
Gospel Ogah
The answer is B
The presence of calcium hydrogen trioxocarbonate (iv)
Quadri Precious
Furring of kettles and boilers are effects of temporary hardness and temporary hardness is caused by the presence of dissolved calcium hydrogen trioxocarbonate (iv)
So therefore,furring of kettles and boilers is caused by calcium hydrogen trioxocarbonate(iv).