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Aflați nr de particule din 2 g Cl2
Chimie cls a 9a

Răspuns :

M=2*35.5=71 g/mol Cl₂

71 g Cl₂....................6.023*10²³ molecule Cl₂

2 g Cl₂...................................x molecule Cl₂

x=2*6.023*10²³/71= 0.1696 *10²³molecule Cl₂

Numarul de atomi  de clor=2*0.1696 *10²³=0.3393*10²³

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