Chalcopyrite (cufes2) is an abundant copper mineral that can be converted into elemental copper through the four step process below.
a) calculate the mass of cu in g from 5.40 kg cufes2.
i got 1.87e3g of cu.
b)calculate the mass of cufes2 needed in g to produce 150.0 g cu if the yield for the conversion process is 82%.

the answer is: they rebelled against saddam hussein’s rule.

kurds opposed saddam rule and wanted independence. kurds in the north and shiites in the south revolt against hussein.

for example, the halabja attack in 1988 conducted against the kurdish people by the iraqi regime under saddam hussein, where between 4000 people are killed and around 9000 are injured.

c

explanation:

the objects have the same charge.

qualitative observation deals with data that can be observed with our senses: sight, smell, touch, taste, and hearing. they do not involve measurements or numbers. for instance, colors, shapes, and textures of objects are all qualitative observations.