In a chemical reaction, an unknown mass of Carbon completely burns in 16 g of
Oxygen to form 22g of Carbon dioxide. Calculate the mass of Carbon that has reacted.
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Explanation:
Hard water caused e.g. by dissolved magnesium sulfate or calcium sulfate is permanent hardness because the sulfate salts don't decompose on heating, so, the hardness is NOT removed on boiling the hard water.✔✔
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