142g chloru ile to cząsteczek ?
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142g chloru ile to cząsteczek ?
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6,02 x 10 ^23 czasteczek ---- 71g Cl2
X --- 142g
X=12,04 x 10 ^23 czasteczek
M(Cl2)=2*35,5g=71g
71g---------------6,02*10²³
142g--------------x
x=142g*6,02*10²³/71g
x=12,04*10²³