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
Ede4ka [16]
3 years ago
12

A _ reaction occurs when a substance usually containing carbon reacts with oxygen to produce energy in the form of light and hea

t.
Chemistry
1 answer:
trapecia [35]3 years ago
3 0
A COMBUSTION reaction occur when a substance ...........................................
Combustion reaction is also known as burning. It occurs when an hydrocarbon react with oxygen to yield carbon dioxide, water and energy in the form of light and heat. Combustion reaction can not take place in the absence of oxygen.
You might be interested in
Why is governmental funding of research important?
nordsb [41]

Answer:

D. The government determines what is right & wrong for everyone

Explanation:

3 0
3 years ago
Glucozo công thức phân tử
olganol [36]

Answer:I would copy and past but that’s a lot of work just read it

Explanation:

3 0
3 years ago
A jar of mixed nuts is a ________ mixture
Alisiya [41]
It is a heterogeneous mixture <span>
</span>
5 0
3 years ago
Read 2 more answers
What hydrocarbons burn completely in an excess of oxygen, the products are
Sindrei [870]
The right answer for the question that is being asked and shown above is that: "C) carbon monoxide and carbon dioxide" hydrocarbons burn completely in an excess of oxygen, the products are <span>C) carbon monoxide and carbon dioxide</span>
3 0
3 years ago
Read 2 more answers
Which subatomic particle gives off visible light when it drops back down to a lower energy state?
icang [17]

Answer:

Option C = electron

Explanation:

Electrons are responsible for the production of colored light.

Electron:

The electron is subatomic particle that revolve around outside the nucleus and has negligible mass. It has a negative charge.

Symbol= e-

Mass= 9.10938356×10⁻³¹ Kg

It was discovered by j. j. Thomson in 1897 during the study of cathode ray properties.

How electrons produce the colored light:

Excitation:

When the energy is provided to the atom the electrons by absorbing the energy jump to the higher energy levels. This process is called excitation. The amount of energy absorbed by the electron is exactly equal to the energy difference of orbits.

De-excitation:

When the excited electron fall back to the lower energy levels the energy is released in the form of radiations. this energy is exactly equal to the energy difference between the orbits. The characteristics bright colors are due to the these emitted radiations. These emitted radiations can be seen if they are fall in the visible region of spectrum.

Other process may involve,

Fluorescence:

In fluorescence the energy is absorbed by the electron having shorter wavelength and high energy usually of U.V region. The process of absorbing the light occur in a very short period of time i.e. 10 ∧-15 sec. During the fluorescence the spin of electron not changed.

The electron is then de-excited by emitting the light in visible and IR region. This process of de-excitation occur in a time period of 10∧-9 sec.

Phosphorescence:

In phosphorescence the electron also goes to the excitation to the higher level by absorbing the U.V radiations. In case of Phosphorescence the transition back to the lower energy level occur very slowly and the spin pf electron also change.

5 0
3 years ago
Other questions:
  • Which feature indicates that Mars resides in the inner region of the solar system?
    10·1 answer
  • A mothball, composed of naphthalene (c10h8), has a mass of 1.64 g . part a how many naphthalene molecules does it contain?
    7·1 answer
  • A compound is found to contain 46.68 % nitrogen and 53.32 % oxygen by mass. To answer the question, enter the elements in the or
    9·1 answer
  • In the 19th century James Joule, an English scientist, was the first to recognize the mechanical equivalent of heat as a specifi
    14·1 answer
  • You are given an unknown sample that when treated with hydrochloric acid forms a precipitate. After decantation, you add boiling
    11·1 answer
  • Explain what makes a cirrus cloud.
    7·1 answer
  • You are given a stock solution of 500.0 mL of 1.00M magnesium chloride solution. Calculate the volume of the stock solution you
    14·1 answer
  • Does the amount of air change the time it will take to burn completely?
    14·1 answer
  • Tincture of iodine has antiseptic properties. This solution is made by dissolving.
    15·1 answer
  • Why is a solution not a pure substance?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!