ellisc7044
12.10.2019 •
Chemistry
If we place the like poles of two magnets facing each other what will happen?
a.nothing
b.they will both become negative.
c.they will attract each other.
d.they will repel each other.
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Ответ:
4.72 x 10^22 atoms
Explanation:
MM of CO2 = 12 +(16 x 2) = 12 +32 = 44g/mol
44g of CO2 contains 6.02x10^23 atoms
Therefore, 3.45g will contain = (3.35 x 6.02x10^23) / 44 = 4.72 x 10^22 atoms