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
qwelly [4]
3 years ago
10

When magnesium ribbon is ignited, it gives off a white fume of magnesium oxide. What is this type of reaction?

Chemistry
1 answer:
Svetllana [295]3 years ago
3 0
This reaction is called a composition reaction.
You might be interested in
In chemistry, what varies with the number of molecules present in a sample of a particular substance?
Neko [114]

Answer: concentration

Explanation:

Concentration refers to the amount of a substance present in a sample. The more molecules of a substance present in a sample, the greater its concentration. The less molecules of a substance in a sample, the lesser the concentration. We are often concerned about analytically determining the concentration of a substance using diverse analytical methods in chemistry.

3 0
3 years ago
A 15.0 L tank of gas is contained at a high pressure of 8.20 x 10^4 torr. The tank is opened and the gas expands into an empty c
Inga [223]

Answer:

20.5torr

Explanation:

Given parameters:

V₁  = 15L

P₁  = 8.2 x 10⁴torr

V₂ = 6 x 10⁴L

Unknown:

P₂  = ?

Solution:

To solve this problem we have to apply the claims of Boyle's law.

Boyle's law is given mathematically as;

            P₁ V₁   = P₂V₂

where P₁ is the initial pressure

          V₁ is the initial volume

           P₂ is final pressure

           V₂ is final volume

   8.2 x 10⁴  x 15  = P₂  x 6 x 10⁴

         P₂  = 20.5torr

5 0
2 years ago
Giải gấp giúp em câu này với ạ:
padilas [110]

Explanation:

what do you have written I can't understand one word right a properly

6 0
3 years ago
What is The cellular process that releases the energy stored in food molecules
notka56 [123]

Respiration. That is the process.

7 0
3 years ago
Consider a sample of helium and a sample of neon, both at 30.0°C and 1.5 atm. Both samples have a volume of 5.0 liters. Which st
Triss [41]

Answer:

A.

Explanation:

Using the ideal gas equation, we can calculate the number of moles present. I.e

PV = nRT

Since all the parameters are equal for both gases, we can simply deduce that both has the same number of moles of gases.

The relationship between the mass of each sample and the number of moles can be seen in the relation below :

mass in grammes = molar mass in g/mol × number of moles.

Now , we have established that both have the same number of moles. For them to have the same mass, they must have the same molar masses which is not possible.

Hence option A is wrong

7 0
3 years ago
Other questions:
  • What is the de Broglie wavelength, in cm, of a 11.0-g hummingbird flying at 1.20 x 10^2 mph?
    14·1 answer
  • Which of the following lists contains only elements?
    14·1 answer
  • A reaction releases 489.34 J of heat how many calories of heat is that equal to 1 cal equals 4.186 J
    12·1 answer
  • How does thermal energy travel?
    14·2 answers
  • The molecules of Any Given substance are always
    6·1 answer
  • PLEASE for the love of god answer these questions for me!!!! It’s urgent.
    8·2 answers
  • How to can teste ion in salt​
    13·1 answer
  • The percent ionization of a 0.350 M HC,H,O2 solution. Ka(HC2H302)​
    9·1 answer
  • True or false? An organism may play more than one role in a food web
    10·2 answers
  • What is a good rollercoaster design??
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!