Răspuns:
notez cu m masa amestecului
m= m,Fe + m,S + m,impuritati
mFe=m,impuritati=10g
dar m,Fe= 0,2xm---> 10=0,2xm--> m= 50g
m,S= m-m,Fe -m,impuritati=50g-10g-10g= 30g
Explicație:
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Răspuns:
notez cu m masa amestecului
m= m,Fe + m,S + m,impuritati
mFe=m,impuritati=10g
dar m,Fe= 0,2xm---> 10=0,2xm--> m= 50g
m,S= m-m,Fe -m,impuritati=50g-10g-10g= 30g
Explicație: