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
professor190 [17]
2 years ago
5

Sinuman sa inyo ay puwedeng tanghaling kampeon.

Chemistry
2 answers:
Zinaida [17]2 years ago
8 0

Answer:

BTS army i am a big fan...........

MatroZZZ [7]2 years ago
3 0
Riekeivigigoeowodoro
You might be interested in
When sodium is put in water, the metal floats on the surface and reacts to form sodium
mrs_skeptik [129]

Answer: Sodium also floats on the surface, but enough heat is given off to melt the sodium (sodium has a lower melting point than lithium and the reaction produces heat faster) and it melts almost at once to form a small silvery ball that dashes around the surface.

Explanation:

8 0
2 years ago
Read 2 more answers
As ice melts from a solid to a liquid, A) entropy increase
Dovator [93]
That answer is false 
4 0
2 years ago
What is paper chromatography? Calculate the Rr value of a colored dye that traveled 52 mm on a chromatography strip while the so
Karo-lina-s [1.5K]

Answer:

Paper chromatography is a basic technique of chromatography. It consist in the separation of the mixe components using a solvent.

Explanation:

Paper chromatography is a basic technique of chromatography. It consists in the separation of the mixed components using a solvent.

Paper chromatography consists of put some dot of the mix using a glass capillary into a specialized paper, generally made of cellulose, this is called a stationary phase.

Then you put this paper into a camera of glass named, chromatography camera, where previously contain a solvent. The solvent also know as a mobile phase, the type can be defined before the test and involves a study of the kind of the mix, and the compound you want to separate.

The chromatography camera has to be closed all the time during the test, and you can't move at all because the movement of the solvent can alternate the result.

Very often, the solution of the solvent is a mix of different liquid substances with different polarities.

When the stationary phase put into the camera, the solvent starts to move up over the paper, until the separation of the compounds is observable.

the Rf is a value who relates the move of the mobile phase with the move of the distance traveled by the substance tested.

To undersant the paper chromatography, you can watch the images attached.

The first is an image of the chromatography camera.

The second one is an image of a cellulose paper after the chromatography is done. You can watch the dots who indicates the traveling of the compound across the paper.

The third one can show you the evolutions of paper chromatography, from the beginning to the end.

To calculate the Rf value you have to use the equation:

Rf = distance traveled by the substance/distance traveled by the solvent/

<u>Rf = 52mm/81mm =0.64</u>

<u></u>

3 0
3 years ago
Which product of the ultraviolet decomposition of cfcs acts as the catalyst for ozone decomposition?
Vikentia [17]
The answer is <span>Chlorine atoms.   This is the </span><span>product of the ultraviolet decomposition of cfcs acts as the catalyst for ozone decomposition.  </span>
8 0
2 years ago
Pls no links!!
sasho [114]

Answer:

One advantage is radio telescopes have much longer wave length

6 0
2 years ago
Other questions:
  • Which best explains what happens when an electron moves from an excited state to the ground state? The electron absorbs energy a
    13·2 answers
  • A fluorine ion has 9 protons and a charge of –1. How many electrons are in an ion of fluorine?
    10·2 answers
  • How would you classify the following events?
    6·1 answer
  • Negatively-charged electrons randomly dispersed in a sea of positive charge.
    14·1 answer
  • Mikayla says that air is an element since it has oxygen in it. Jose says that air is a mixture because each part of air keeps it
    11·1 answer
  • Which element does the electron configuration 1s2s2p2 represent?
    6·1 answer
  • Help me please!! :D​
    14·1 answer
  • In a particular genetic cross, the probability of the offspring having a certain trait is Which percentage represents this proba
    6·1 answer
  • Please please do it because i need an answer.
    9·1 answer
  • Using the solubility curves, approximately how many grams of NaNO3 can be dissolved in 100. grams of water at 80 °C?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!