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
lubasha [3.4K]
3 years ago
9

When was the element copper discovered? Who discovered the element copper?

Chemistry
2 answers:
LenKa [72]3 years ago
8 0
9000bc, it’s been known forever I don’t think there’s an answer
chubhunter [2.5K]3 years ago
8 0

The Mesopotamians discovered copper (Cu) in 9000 BC.

You might be interested in
Andre is predicting the products of chemical reactions. In one reaction, a hydrocarbon is the only reactant. What is the best pr
masya89 [10]
<span>A polymer forms because the hydrocarbon joins with itself in a polymerization reaction.

I really hope this helps! :D</span>
6 0
3 years ago
Read 2 more answers
Which of the following ionic compounds has a transition metal in it?
Georgia [21]

Considering that copper occupies Group 11, the ionic compound with a transition metal in it is c. CuSO₄.

<h3>What is a transition metal?</h3>

A transition metal is any of the set of metallic elements occupying a central block (Groups 3–12) in the periodic table. The differential electron occupies a d subshell.

Which of the following ionic compounds has a transition metal in it?

  • a. KOH. No, K occupies Group 1.
  • b. Cs₂S. No, Cs occupies Group 1.
  • c. CuSO₄. Yes, Cu occupies Group 11.
  • d. MgCl₂. No, Mg occupies Group 2.

The ionic compound with a transition metal in it is c. CuSO₄.

Learn more about transition metals here: brainly.com/question/2426896

8 0
2 years ago
Which method of separation would be most appropriate for separating a mixture of water and alcohol?
artcher [175]

Answer:C. distillation

Explanation:

Compounds having  different boiling points when  mixed can be separated by Fractional distillation.

Now when there is a mixture of  water and alcohol, Upon heat, we would see that the alcohol will boil at a lower temperature than water  for eg, ethanol will boil at 78.5 degrees Celsius, vaporizes and  distills into the fractionating columns leaving the  water which we know boils at 100 degrees  Celsius.

See related link here :brainly.com/question/13113349

7 0
3 years ago
Read 2 more answers
The addition of 250.0 J to 30.0 g of copper initially at 22.0°C will change its temperature to what final value? (Specific heat
WINSTONCH [101]

Answer:

Final temperature = 43.53^{\circ} C

Explanation:

Given that,

Heat added, Q = 250 J

Mass, m = 30 g

Initial temperature, T₁ = 22°C

The Specific heat of Cu= 0.387 J/g °C

We know that, heat added due to the change in temperature is given by :

Q=mc\Delta T\\\\Q=mc(T_2-T_1)\\\\\dfrac{Q}{mc}=(T_2-T_1)\\\\T_2=\dfrac{Q}{mc}+T_1

Put all the values,

T_2=\dfrac{250}{30\times 0.387}+22\\\\=43.53^{\circ} C

So, the final temperature is equal to 43.53^{\circ} C.

8 0
3 years ago
Help me with bellwork​
lys-0071 [83]

Answer:

1. PE

2. KE

3. PE

4. KE

5. KE

6. PE

7. KE

8. KE

9. PE

10. PE

Explanation:

Think about it this way, potential energy is stored energy while kinetic energy is active energy.

7 0
3 years ago
Other questions:
  • A 1.00 kg block of ice at 0 °c is added to a picnic cooler. how much heat will the ice remove as its melts to water at 0 °c?
    11·1 answer
  • Which of the following is most dense
    8·2 answers
  • Does anyone understand this?
    7·1 answer
  • What is the enthalpy of reaction from the following energy diagram?
    6·2 answers
  • in a chemical change how does the total energy of the reactants compare to the total energy of the products
    11·1 answer
  • Balance the equation 2kclo3 3o2 + kcl
    11·1 answer
  • Aqueous hydrochloric acid HCl reacts with solid sodium hydroxide NaOH to produce aqueous sodium chloride NaCl and liquid water H
    10·1 answer
  • Which organisms are producers in a temperate coniferous forest? (Select all that apply.)
    11·2 answers
  • What has a larger mass, a mole of oxygen gas or a mole of neon gas?
    10·1 answer
  • Can some please help me complete this for me it’s due today!
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!