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Akimi4 [234]
4 years ago
13

why does every human measurement have uncertainty associated with it? Why must we manage the uncertainty during calculations?

Chemistry
1 answer:
dimulka [17.4K]4 years ago
3 0
Because there are many numbers of the human measurement . we must manage the uncertainly doing calculations because we can know what we are calculating.
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Iron (ii) ions, Fe²⁺ have a positive charge of +2. Chromate ions, CrO₄²⁻, on the other hand have a positive charge of -2. When iron (ii) ions and chromate ions combine two form a compound, each ion will contribute a mole of ion towards the formation of the compound. This is in line with the idea that a compound carries no charge. The positive charge (+2) of the iron (ii) ions are balanced by the negative charge of the chromate ions as shown mathematically as follows;

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