Answer:Answer is: 315,29 grams of copper ore.
m(chalcopyrite) = ?
ω(CuFeS₂) = 55,0 % = 0,55.
m(Cu) = 60,0 g.
mass percentage of copper in CuFeS₂:
ω(Cu) = Ar(Cu) ÷ Mr(CuFeS₂).
ω(Cu) = 63,55 ÷ 183,4.
ω(Cu) = 0,346 = 34,6 %.
mass percentage of copper in chalcopyrite:
ω(Cu) : ω₁(Cu) = 100% : ω(CuFeS₂).
ω₁(Cu) = 19,03 % = 0,1903.
m(chalcopyrite) = 60,0 g ÷ 0,1903.
m(chalcopyrite) = 315,29 g.
Step-by-step explanation: Im sorry if thats alot o.o
Answer:
575 kg
Step-by-step explanation:
100 kg of ore = 12 kg of copper
69kg of copper = x kg of ore
12x = 100 x 69
x = 6900 / 12
x = 575
