Answer:
A mole is 6.023 x (ten to the 23rd power) formula units. (Avogadro's number).Thus you get your answer by dividing your number by Avogadro's number. As you have written your number, the answer would be 2.047 x (10 to the minus 21). also I think it probably have 1.204 x (10 to the twenty fourth power), and that you are expected to use the approximation 6.02 x (ten to the 23rd power) for Avogadro, which gives a much simpler answer of 20.
Explanation: I hope this answer your question if this is wrong or incorrect please let me know also i hope you have a great day.
