What mass of scale is formed on the spiral of an electric kettle if 2 kg of hard water containing 2% of insoluble
| July 3, 2021 | education
What mass of scale is formed on the spiral of an electric kettle if 2 kg of hard water containing 2% of insoluble calcium and magnesium salts is completely boiled away in it?
The mass of water is 2 kg = 2000 grams.
We find how many grams of salt it contains: 2000 * 0.02 = 40 grams.
The answer is 40 grams of scale is formed.
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