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
notsponge [240]
3 years ago
5

Please select the best answer and click "submit."

Chemistry
1 answer:
vladimir1956 [14]3 years ago
5 0
When it comes to physical changes like phase changes, there are two types of heat energy: sensible heat and latent heat. Sensible heat is the heat absorbed/released when you heat the substance but it doesn't change phase. An example would be heating lukewarm water. The substance is liquid all throughout. Latent heat, on the other hand, is the heat absorbed/released when there is a phase change. An example would be boiling water, because it changes liquid to vapor. 

Hence, for freezing liquid, you use the latent heat, specifically the heat of fusion. The answer should be

2.5 g * (1 mol/18.02 g) * 6.03 kJ/mol = 0.84 kJ/mol

The answer is not in the choices. You only use Hvap if you boil water.
You might be interested in
What is Gallium Sulfide(Ga2S3).<br> Ionic or Covalent?
mrs_skeptik [129]
The answer is Covalent







6 0
3 years ago
Which type of intermolecular or interatomic force does methylated spirits fall under?​
Triss [41]

Of all the substances used, water possesses the strongest intermolecular forces (hydrogen bonds). Although hydrogen bonds exist in glycerin and methylated spirits as well, they are a little weaker than in water.

Intermolecular forces in ch3oh include London dispersion forces, dipole dipole attraction, and hydrogen bonding. Methylated spirits, a common industrial solvent, are mostly made of ethyl alcohol. Because methanol denatures ethyl alcohol, commercial supply is exempt from the typical taxes and charges imposed on alcohol. A quantity of methyl alcohol or phenol is added to make it so that drinking it will make you go blind. Alcohols have the hydrogen bonding and van der Waals intermolecular forces of attraction.

Learn more about hydrogen bonding here-

brainly.com/question/10904296

#SPJ9

4 0
2 years ago
How do molecules make up cells?<br><br> Plz help ASAP
IceJOKER [234]

Answer:

They contain atoms that combine together to form molecules. In multicellular organisms, such as animals, molecules can interact to form cells that combine to form tissues, which make up organs. ... All atoms contain protons, electrons, and neutrons.

5 0
3 years ago
Read 2 more answers
If the air in a room has lower temperature than the air coming out of a floor vent from a forced air heater , heat would flow
jolli1 [7]
To the top. Common knowledge my dude. Heat always rises to the top.
5 0
3 years ago
Read 2 more answers
Describe how the catalyst, zymase speeds up the reaction shown
Vlad1618 [11]

Describe how the catalyst, zymase speeds up the reaction shown

The catalyst zymase speeds up the reaction by catalyzing the fermentation of sugar into ethanol and carbon dioxide. It is mostly present in yeasts. 

7 0
3 years ago
Other questions:
  • Distinguish air mass and a front
    14·1 answer
  • What are particles that are close together and locked in place??
    9·1 answer
  • What is the name of the giant supercontinent
    7·2 answers
  • The name of chemical formula
    12·1 answer
  • When a horn is moving away from an observer the sound waves from it will pass by the observer____ frequently, causing the pitch
    8·1 answer
  • Consider the following weak acids and their Ka values: Acetic Acid Ka = 1.8×10^−5 Phosphoric Acid Ka = 7.5×10^−3 Hypochlorous Ac
    6·1 answer
  • Which kind of force is a dipole-dipole force?
    6·2 answers
  • What is the chemical name for the balanced equation? 2Al+3Pb(NO3)2=2Al(NO3)3+3Pb​
    12·1 answer
  • HEEELPPP!!
    7·1 answer
  • Pleaseeee help pretty please
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!