Post a New Question

Chemistry

posted by .

A certain mine produces 2.5 108 kg of copper from chalcopyrite (CuFeS2) each year. The ore contains only 0.80% Cu by mass.
(a) If the density of the ore is 2.0 g/cm3, calculate the volume of ore removed each year.

(b) Calculate the mass of SO2 produced by roasting (assume chalcopyrite to be the only source of sulfur).



I don't even know where to begin.

For a, 0.8% of some mass (say x) = 2.5108 kg. Calculate x = mass ore that must be mined to obtain 2.5 kg Cu.
Change that to grams, then mass = volume x density. You know mass and density; calculatr volume. Part b is a stoichiometry problem. Write the equation, balance it, convert g Cu to mols, convert mols Cu to mols SO2, convert mols SO2 to grams. Post any work if you need futher assistance.

Answer This Question

First Name
School Subject
Your Answer

Related Questions

More Related Questions

Post a New Question