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
Neko [114]
2 years ago
14

4. All of the following are examples of natural causes of air pollution

Chemistry
1 answer:
erma4kov [3.2K]2 years ago
8 0

Answer:

factory emissions

Explanation:

You might be interested in
Identify the combustion reaction. c4h12 + 7o2 ⟶ 6h2o + 4co2 2h2 + o2 ⟶ 2h2o al2s3 ⟶ 2al + 3s cl2 + 2kbr ⟶ 2kcl + br2
Levart [38]
From the given equations, the combustion reaction is;
C₄H₁₂ + 7O₂ --> 4CO₂ + 6H₂O
Combustion reactions are when organic compounds react with O₂ to produce water and CO₂. From the given reactions, C₄H₁₂ is an organic compound that reacts with O₂ to produce water and CO₂.
Therefore this is the only reaction that follows the general equation for combustion.
3 0
3 years ago
Which of the following statements is true? Choose one: A. Bronze was used as early as 4000 B.C.E. to replace less-desirable iron
Verizon [17]

Answer:

B.Bronze is harder than copper, so it retains a cutting edge sharper than that of copper.

Explanation:

The importance of bronze in the history of the human kind can not be only measured in the durability but the help that it provided to our ancestors, the things they were allowed to do once they dicovered how to mold it, and the tools that they produced and made many every day tasks easier for them and the ability of bronze to mantain the cutting edge longer than copper was one of the main reasons why it took its places in the fabrication of many tools.

4 0
3 years ago
Which gives up the electrons,Lithium or chlorine?
olya-2409 [2.1K]
Lithium gives up electrons
8 0
3 years ago
Read 2 more answers
What is the difference between the number of electrons in an atom of selenium,Se, and the number of electrons in an atom of alum
aliina [53]

Answer:

A)21

Explanation:

To know the difference between the number of electrons in the two atoms, we must first know the number of electrons in the atoms.

For Selenium, Se, we have 34 electrons. The element is in group 6 on the periodic table.

Aluminum on the other hand is in the Boron family with a total of 13 electrons.

The difference,( 34-13) electrons gives a total of 21 electrons

5 0
3 years ago
Read 2 more answers
A chemist dissolves 484 .mg of pure perchloric acid in enough water to make up 240.mL of solution. Calculate the pH of the solut
sdas [7]

Answer:

1.70

Explanation:

The molar mass of perchloric acid is 100.46 g/mol. The moles corresponding to 484 mg (0.484 g) are:

0.484 g × (1 mol/100.46 g) = 4.82 × 10⁻³ mol

4.82 × 10⁻³ moles are dissolved in 240 mL (0.240 L) of solution. The molar concentration of perchloric acid is:

4.82 × 10⁻³ mol/0.240 L = 0.0201 M

Perchloric acid is a strong monoprotic acid, that is, it dissociates completely, so [H⁺] = 0.0201 M.

The pH is:

pH = -log [H⁺] = -log 0.0201 = 1.70

8 0
2 years ago
Other questions:
  • Why is nonpoint source pollution potentially more harmful than point source pollution?
    7·2 answers
  • When an electron is added, the ion is called?______
    6·2 answers
  • Chlorine, selenium and bromine are located near each other on the periodic table. Which of
    9·1 answer
  • Which particles are found in an atom have charges
    12·2 answers
  • Which has a greater volume, 10 grams of water or 10 grams of acetone?
    15·1 answer
  • hat range, give the lower value and the higher value, respectively, for the following. (a) How many cubic meters of water are in
    15·1 answer
  • What is the change in electrons for nitrogen in the following reaction?
    11·2 answers
  • An igneous rock that _____ is made of really small mineral crystals. A. cools rapidly B. crystallizes slowly C. undergoes extrem
    12·1 answer
  • What is the mass in grams of 5.50 mol of sodium?
    11·1 answer
  • How can you test a mineral for hardness?<br><br> I NEED~ THIS NOW PLEASE
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!