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07.12.2020 •
Chemistry
How is the number of moles of an element determined from a known mass?
A. The known mass is divided by Avogadro's number to get moles.
B. The mass of 1 mole of the element is used as a conversion factor to convert grams to moles.
C. The atomic number is used as a conversion factor to convert grams to moles.
D. The known massis multiplied by Avogadro's number to get moles.
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Ответ:
A). Money made the exchanges fairer.
Explanation: Money cannot he compared to the barter system because during the barter system, some were cheated into having lower quantity of what they exchanged with. For example giving a whole grown goat for like 20 tubers of yam.