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
postnew [5]
3 years ago
8

Why do you cool down tea extract in ice to below 40°c before adding dichloromethane?

Chemistry
1 answer:
jeyben [28]3 years ago
5 0
For drinking because it’s much cold
You might be interested in
Thermal energy is measurement of what type of molecular energy? *
Rama09 [41]

Answer:

Kinetic energy!

Explanation:

It measures the average kinetic energy of the molecules of a substance in degrees Fahrenheit (F) or Celsius (C).

Have a good day!!

5 0
2 years ago
Complete these structures by adding electron dots as needed.
LiRa [457]
This is hard to show but here is how you would determine these. NOTE each dot is an electron. 
<span>Question 1) </span>
<span>F-H </span>
<span>1) determine the valance electrons for each. F has 7 and H has 1 </span>
<span>2) one electron from both F and H form the bond "-" which means that you still have 6 electrons to place around F and none to place around H. Place the 6 in sets of 2 around the F </span>
<span>.. </span>
<span>F-H </span>
<span>¨ </span>
<span>Question 2) </span>

<span>2) H-O-H </span>
<span>H has 1 valence electron minus 1 used in the bond to O = 0 electrons to place </span>
<span>H has 1 valence electron minus 1 used in the bond to O = 0 electrons to place </span>
<span>O has 6 valence electrons minus 2 used in the bonds to the H's = 4 electrons to place </span>

<span>H-O-H: place two dots above and below the oxygen </span>

<span>Question 3) </span>
<span>3) O=N----H : NOTE: a double bond requires O and N to share two of their electrons each </span>
<span>O has 6 valence electrons minus 2 used in the bonds to N = 4 electrons to place </span>
<span>N has 5 valence electrons minus 3 used in the bonds to O and H = 2 electrons to place </span>
<span>H has 1 valence electron minus 1 used in the bond to N = 0 electrons to place </span>
<span>place the 2 dots on top and bottom of oxygen. </span>
<span>place 2 above the N </span>
7 0
3 years ago
6. Explain a situation in which elastic potential energy could be transformed into kinetic energy.
dsp73

Answer:

When you pull a rubber band there is elastic potential energy stored in the rubber band but once you let go of either side the EPE turns into Kinetic Energy.

6 0
2 years ago
What is the name for potassium oxide's structure? Give two properties of potassium oxide.
Anna71 [15]

Answer:

- The name for the potassium oxide's structure is ionic.

Properties:

- High melting point.

- Soluble in water.

Explanation:

- The ionic structure it is formed by a cation (atom with positive charge) and an anion (atom with negative charge). In this case, potassium is the cation and the oxigen is the anion.

- Since potassium oxide is an ionic compound, it has a high melting point, because of the strong bonds. Also, it is soluble in polar solvents, like water, because its ions generate polarity in the molecule.

8 0
1 year ago
Which description applies to a physical property? Choose the correct answer
choli [55]

Answer:

the third one, measured or observed without changing the identity and composition of matter. because physical property does not under go any change but can be put back.

6 0
2 years ago
Other questions:
  • With solutions of strong acids and strong bases, the word strong refer to ____. (1 point) normality molarity solubility degree o
    10·2 answers
  • The first letter of a chemical symbol is capitalized.true or false
    11·1 answer
  • For each of the following unbalanced reactions, sup- pose exactly 5.00 g of each reactant is taken. Deter- mine which reactant i
    15·1 answer
  • How can heat from the sun transfer from the cement to your feet
    5·1 answer
  • Which of the following chemical formulas could represent a stable compound formed with an element "X" from group 1A and Oxygen?
    9·1 answer
  • A flask contains 0.100 mol of liquid bromine, br2. determine the number of bromine molecules present in the flask.
    13·1 answer
  • A process that is a physical change.
    5·1 answer
  • How many neutrons does be-14 have?
    7·2 answers
  • Explique por qué se necesita una temperatura alta para derretir el yoduro de potasio.​
    8·1 answer
  • What is the difference b/w synthesis reaction and combination reaction​
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!