Ile atomów znajduje sie w próbce krzemu o masie 5 gram.
Z góry dziekuję . Dam naj ;)
mSi=28g/mol
28g - 6,02×10²³at.
5g - x×10²³ at.
______________________
x = 5g×6,02×10²³at.÷28g
x = 1,075×10²³atomów
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mSi=28g/mol
28g - 6,02×10²³at.
5g - x×10²³ at.
______________________
x = 5g×6,02×10²³at.÷28g
x = 1,075×10²³atomów