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
frutty [35]
3 years ago
15

The most common source of copper (Cu) is the mineral chalcopyrite (CuFeS2). How many kilograms of chalcopyrite must be mined to

obtain 305 g of pure Cu? Express your answer to three significant figures and include the appropriate units.
Social Studies
1 answer:
schepotkina [342]3 years ago
5 0

Answer:

0.881 kilograms

Explanation:

Mass of Cu = 305 g

Molar mass of Cu = 63.546 g/mol

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

Thus,

Moles= \frac{305\ g}{63.546\ g/mol}

Moles of Cu = 4.8 moles

Since in the formula of CuFeS_2,

1 mole of copper is present in 1 mole of CuFeS_2

So,

4.8 mole of copper is present in 4.8 mole of CuFeS_2

Moles of CuFeS_2 = 4.8 moles

Molar mass of CuFeS_2 = 183.53 g/mol

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

Thus,

4.8\ moles= \frac{Mass}{183.53\ g/mol}

Moles of CuFeS_2 = 881 g

Also, 1 g = 0.001 kg

So,

<u>0.881 kilograms of chalcopyrite must be mined to obtain 305 g of pure Cu.</u>

You might be interested in
Which statement best supports the idea that the United States has a progressive income tax?
Elis [28]
C is the best answer
7 0
3 years ago
Read 2 more answers
What importance did North Africa have to conquering states?
wolverine [178]
It was a source of food and trade. 

8 0
3 years ago
Read 2 more answers
this report showed that racial and ethnic minorities receive lower-quality health care than caucasians, even when insurance stat
kvv77 [185]

The report that shows the racial and ethnic minorities is: “Unequal Treatment: Confronting Racial and Ethnic Disparities in Health Care.”

Minority group members frequently encounter prejudice in a variety of spheres of daily life, including housing, employment, healthcare, and education, among others.

A national minority is a social group inside a state that is distinct from the majority and/or dominant population in terms of ethnicity, language, culture, or religion. It also typically has a strong connection to the land that the minority social group originally came from.

Unequal Treatment report demonstrated that even when insurance status, wealth, age, and the severity of diseases are equivalent to Caucasians, racial and ethnic minorities have poorer health care than those of those groups.

Learn more about minorities from here:

brainly.com/question/3711073

#SPJ4

4 0
1 year ago
How much did the United States pay for Florida
Andre45 [30]
The answer is D. Five million dollars was how much the United States pay for Florida. The United States did not pay Spain but was paying the American citizens their legal claims that of a maximum of five million dollars. Pickney's Treaty of 1795 between United States and Spain was to stay in force.<span />
7 0
3 years ago
Read 2 more answers
What organizational changes might you recommend to the auto companies? the airline industry?
o-na [289]
<span>Both industries need to become more customer-focused. Though their focus on profits is understandable, the decline in profits will continue if consumers see that the product they are receiving is lackluster. People drive or take buses or trains more often than they fly because flying has become so inconvenient and expensive. People hold on to cars well past their expiration dates because cars are so expensive and car salesmen are too pushy.</span>
8 0
3 years ago
Other questions:
  • Can you hold more than one driver's license
    8·1 answer
  • According to social impact theory, resistance to social pressure is most likely to occur when social impact is
    15·1 answer
  • Evaluate whether an organization has a positive impact on the community
    7·1 answer
  • 4. Why does every decision involve trade-offs?
    15·2 answers
  • List three 3 values you have had as a teenager but did not have as an elementary student.
    7·1 answer
  • Why is Saul a significant leader in the history of the Hebrew people?
    14·2 answers
  • Which figure was responsible for the initial use of hypnosis as a medical treatment? A. Milton Erickson B. Franz Mesmer C. James
    10·1 answer
  • To ensure that your writing fulfills your reader's expectations, one of the most important rules is to __________.
    5·1 answer
  • Managers will generally know their human resource needs and the jobs to be filled after completing a(n):________
    13·1 answer
  • Psychotherapies have many common ingredients. identify three commonly agreed-upon benefits of psychotherapies.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!