1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Cloud [144]
3 years ago
10

The most common copper ore used in the production of copper is chalcopyrite. If a chalcopyrite ore contains 55.0% CuFeS2, how ma

ny grams of chalcopyrite ore are needed to produce 60.0 g of copper?
Chemistry
2 answers:
sattari [20]3 years ago
8 0
Answer is: 315,29 grams of copper ore.
m(<span>chalcopyrite) = ?
</span>ω(CuFeS₂) = 55,0 % = 0,55.
<span>m(Cu) = 60,0 g.
mass percentage of copper in </span>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.

marysya [2.9K]3 years ago
8 0

The formation of Cu from CuFeS2 can be shown by the following equations:

4CuFeS2 + 7O2 → 4CuS + 2Fe2O3 + 4 SO2  

4CuS + 4O2 → 4Cu + 4SO2

Based on the stoichiometry:

1 mole of CuFeS2 produces 1 mol of Cu

Now,

Mass of Cu to be produced = 60 g

# moles of Cu = 60 g/63.5 g.mol-1 = 0.945 moles

Therefore, moles of CuFeS2 required = 0.945 moles

Molar mass of CuFeS2 = 183.5 g.mol-1

Mass of CuFeS2 required = 0.945 * 183.5 = 173.41 g

It is given that the ore contains 55.0% CuFeS2

i.e.

100 g of chalcopyrite contains 55.0 g CuFeS2

The amount of ore corresponding to 173.41 g of CuFeS2 is

= 100 g chalcopyrite * 173.41 g CuFeS2/55 g CuFeS2 = 315.29 g

Ans: Around 315 g of the ore is required to produce 60 g Cu

You might be interested in
Which of the following represents the atomic number of an element?
Anna11 [10]

Answer:

The atomic number is the number of protons in the nucleus

4 0
2 years ago
Which choice below represents a negative impact that chemistry has on society?
RSB [31]

Answer:It’s C on edge 2020

(Combustion of car engines producing pollutants in the air)

Explanation:

I got it right :))

5 0
3 years ago
Which of the following statements is true about gas particles?
satela [25.4K]

Answer:

There is a lot of empty space between them

Explanation:

We know that gas molecules are loosely packed,

Therefore there is a lot of intermolecular space...(Which basically means that there is a lot of space between the molecules or particles in a gas)

Happy to help.

Pls mark as Brainliest.

3 0
3 years ago
Read 2 more answers
Which choice BEST describes the motion of the car represented by the graph?
yanalaym [24]

the gas it has in it. it’s moving because of the gas

4 0
3 years ago
What is the charge on a hypothetical ion with 85 protons and 83 electrons?
lys-0071 [83]

Explanation:

hope this answer was helpful

7 0
2 years ago
Other questions:
  • Please help me :(
    8·1 answer
  • How do you differentiate between gas and a vapour ?
    15·1 answer
  • a one gram sample of hematite up more space than a one gram sample of malachite. what mineral characteristic does this refer to
    10·1 answer
  • What affect would a warm body of water have on the coastline?
    7·1 answer
  • Balancing chemical equations
    13·1 answer
  • Compare the strength of intermolecular forces in no2 to the strength of intermolecular forces in n2
    8·2 answers
  • Aqueous acetic acid is neutralized by aqueous potassium hydroxide. True or False
    14·2 answers
  • Read the scientific question below.
    11·1 answer
  • How many grams are 53.8 of oxygen
    14·1 answer
  • What is the effect of day lenght in plant growth? dependent and independent
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!