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
slavikrds [6]
2 years ago
8

Edge 2020, will give brainliest

Chemistry
1 answer:
statuscvo [17]2 years ago
4 0

Answer:

3, 2, 4, 1

Explanation:

That's the correct sequence

You might be interested in
5. How can you tell the difference between CuS and Cu2S
puteri [66]

Answer:

Density, melting point. and magnetic properties  

Explanation:

I can think of three ways.

1. Density

The density of Cu₂S is 5.6 g/cm³; that of CuS is 4.76 g/cm³.

It should be possible to distinguish these even with high school equipment.

2. Melting point

Cu₂S melts at 1130 °C (yellowish-red); CuS decomposes at 500 °C (faint red).

A Bunsen burner can easily reach these temperatures.

3. Magnetic properties

You can use a Gouy balance to measure the magnetic susceptibilities.

In Cu₂S the Cu⁺ ion has a d¹⁰ electron configuration, so all the electrons are paired and the solid is diamagnetic.

In CuS the Cu²⁺ ion has a d⁹ electron configuration, so all there is an unpaired electron and the solid is paramagnetic.

A sample of Cu₂S will be repelled by the magnetic field and show a decrease in weight.

A sample of CuS will be attracted by the magnetic field and show an increase in weight.

In the picture below, you can see the sample partially suspended between the poles of an electromagnet.

 

6 0
3 years ago
Explain how human activity can affect the carbon cycle.
Eva8 [605]

Answers:

              Human activities badly affect carbon cycle. Activities such as burning fossil fuel and deforestation have begun to effect on carbon cycle and the rise of carbon dioxide in atmosphere.

Explanation:

                   The carbon cycle can be affect when carbon dioxide is either released into atmosphere or remove from atmosphere. When fossil are burnt , carbon is release to the atmosphere at faster rate then it is removed. Natural gas, oil, coal, and other industrial products all are affecting carbon cycle in atmosphere.

                     Deforestation means permanent removal of trees from forest which cause increase in level of carbon dioxide because no trees longer to absorb carbon dioxide from atmosphere. Which result affect on carbon cycle.


4 0
3 years ago
Read 2 more answers
The density of iron is about ___ times greater than water.<br><br> 6, 2, 8, 10, or 4
Lelechka [254]

Answer: 4 i think

Explanation:

8 0
3 years ago
Write down the needed and important water in our life?​
gizmo_the_mogwai [7]

Answer:

Because 60 percent of our body weight is made up of water. Our bodies use water in all the cells, organs, and tissues, to help regulate body temperature and maintain other bodily functions.

Explanation:

3 0
3 years ago
Read 2 more answers
PLEASE HELPPP
rusak2 [61]

Answer; molecule

Explanation:

5 0
3 years ago
Other questions:
  • Describe one experiment that could be carried out to determine which chemical reaction, decomposition, dimerization, or racemiza
    6·1 answer
  • Atoms of elements with the same electron configuration are organized in ____ in the periodic table.
    10·1 answer
  • The half-life is the amount of time it takes for one-half of an isotope sample to decay into a different element. The half-life
    11·1 answer
  • Which chemical formula corresponds to this structural formula?
    9·2 answers
  • You have made use of the Le Chatelier principle in this lab. Explain how the Le Chatelierprinciple is used to help formation of
    9·1 answer
  • 6. Barium sulfate and and sodium sulfate react in a double displacement reaction. If the
    8·1 answer
  • If i rub a balloon on a piece of paper then hold it against my head my hair will stand up why is that?
    11·1 answer
  • A single 250 gram
    10·1 answer
  • hi guys im giving away brainliest answer away for a good cause who ever gives me the best rating for my profile picture gets bra
    15·1 answer
  • An unknown element sample has 2 isotopes present. The first isotope has a mass of 6.017 amu and is
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!