Chemistry, 18.01.2021 21:00 ladybugys

The most common source of copper (CuCu) is the mineral chalcopyrite (CuFeS2CuFeS2). How many kilograms of chalcopyrite must be mined to obtain 395 gg of pure CuCu

Answers: 1

Show answers

Answers

Answer from: Oneandonlybabygirl

1.14kg of chalcopyrite

Explanation:

In 1 mole of chalcopyrite, CuFeS₂, there is 1 mole of Cu. Thus, to solve this question we need to convert the mass of pure Cu to moles using molar mass (Cu = 63.546g/mol). Then, the moles of Cu are equal to moles of chalcopyrite that must be converted to grams and then to kg (CuFeS₂: 183.54g/mol)

Moles Cu:

395g Cu * (1mol / 63.546g) = 6.216 moles Cu = 6.216 moles CuFeS₂

Mass chalcopyirite:

6.216 moles CuFeS₂ * (183.54g/mol) = 1140.9g

In kilograms:

1140.9g * (1kg / 1000g) =

1.14kg of chalcopyrite

Answer from: Quest

both adhesion and cohesion are attractions.

they are different in that adhesion is the force of attraction between the molecules of two different substances, whereas cohesion is the force of attraction between molecules of the same substance.

possible examples include capillary action, in which the adhesion between water and glass causes the water to rise in a narrow tube against the force of gravity.

because of hydrogen bonding, water is extremely cohesive.

this causes molecules on the surface of water to be drawn inward, which is why drops of water form beads on smooth surfaces.

hope this .

Answer from: Quest

For cyclohexane compounds drawn in a chair conformation: -axial bonds are vertical -equatorial bonds are parallel to two bonds within the ring. thus, as i assume the chair conformation is drawn: -the x group is in an axial position, as are the five other vertical bonds. -three axial bonds are on the top face of the ring -the other three axial bonds are on the bottom face the position of the second substituent on each ring carbon is equatorial. gauche groups must be on an adjacent carbon such as carbon 6 and carbon 2, and also gauche groups are rotated by 60 degrees relative to each other. drawing the newman projections for c1–c2 and c1–c6 aids in visualizing the groups that are gauche to the y group on c1. click this link and watch some academic videos that may you more understand the topic

Another question on Chemistry

Chemistry, 21.06.2019 23:30

For the following dehydrohalogenation (e2) reaction, draw the zaitsev product(s) resulting from elimination involving c3â€“c4 (i.e., the carbon atoms depicted with stereobonds). show the product stereochemistry clearly. if there is more than one organic product, both products may be drawn in the same box. ignore elimination involving c3 or c4 and any carbon atom other than c4 or c3.

Answers: 3

Answer

Chemistry, 22.06.2019 02:30

List four observations that indicate that a chemical reaction may be taking place

Answers: 1

Answer

Chemistry, 22.06.2019 09:00

What happens to isotopes that are unstable?

Answers: 1

Answer

Chemistry, 22.06.2019 12:20

Achemistry student weighs out 0.306 g of citric acid (h3c6h5o7), a triprotic acid, into a 250 ml volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with 0.1000 m naoh solution. calculate the volume of naoh solution the student will need to add to reach the final equivalence point. be sure your answer has the correct number of significant digits.

Answers: 3

Answer

You know the right answer?

The most common source of copper (CuCu) is the mineral chalcopyrite (CuFeS2CuFeS2). How many kilogra...

Questions