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
il63 [147K]
2 years ago
8

How much energy is generated from freezing 2.5 g water?

Chemistry
2 answers:
kolezko [41]2 years ago
7 0

Answer:

b

Explanation:

Gnom [1K]2 years ago
5 0

Answer:

if i remember correctly it's B

Explanation:

You might be interested in
Which separation techniques will you apply for the separation of the following? a) oil from water b) kerosene and petrol c) salt
REY [17]

Answer:

A) Separating funnel method

B) Simple Distillation

C) Evaporation

D) Sublimation

E) It is based on the principle of separation whereby even though two substances are dissolved in the same solvent, their respective solubilities could be different. Thus, the component that has more solubility will rise fastest and will therefore get separated from the mixture.

Explanation:

A)

B) Kerosene and petrol are both miscible liquids and the difference in their boiling point temperature is not more than 25°C. Thus, we make use of Simple distillation.

C) Can be separated by evaporation where the water is boiled and it evaporates and leaves the salt behind

D) To separate camphor from salt, we use sublimation so the camphor can change directly from solid to the gas state without passing through the liquid state.

E) Chromatography is used to separate components of a mixture.

It is based on the principle of separation whereby even though two substances are dissolved in the same solvent, their respective solubilities could be different. Thus, the component that has more solubility will rise fastest and will therefore get separated from the mixture.

7 0
3 years ago
When you put aspirated spinach leaf disks in a beaker of sodium bicarbonate and place them in different colors of light, some di
juin [17]

The release of O₂( oxygen) from the process of photosynthesis is what made them to be able to float.

<h3>What is Photosynthesis?</h3>

This is referred to as the process in which green plants manufacture their food in the presence of sunlight which is trapped by chlorophyll.They are known as primary producers and they use compounds such as water and carbondioxide.

The reactants mentioned above undergo series of reactions which leads to the production of glucose and oxygen is given off as a result which is the element responsible for the floating of the aspirated spinach leaf disks in this scenario.

Read moire about Photosynthesis here brainly.com/question/19160081

#SPJ1

3 0
1 year ago
Explain why this reaction can be classified as a synthesis reaction
rusak2 [61]
The reason why the reaction written on the picture can be classified as a synthesis reaction is :
the reaction shows one compound that formed from two compounds 

hope this helps
5 0
3 years ago
Which of the following materials is necessary to stop a beta particle
stich3 [128]
The material needed to stop a beta particle is c. thin pieces of wood.
5 0
3 years ago
A solid sample of a compound a liquid sample of the same compound are each tested for elecrical conductivity.Which test conclusi
nignag [31]
  • An ionic compound will not conduct electricity as a solid.
  • It will conduct electricity when melted.
  • Some ionic compounds are soluble. Their solutions in water also conduct electricity.
<h3>Explanation</h3>

A substance should contain charged particles that are free to move around in order to conduct electricity.

Ionic compounds contain an ocean of ions. They carry either positive or negative charges. Attractions between them hold them in a rigid lattice under the solid state. Those ions are unable to move. The ionic compound can't conduct electricity.

Melting the ionic compound will break the lattice. Those ions are now free to move to conduct electricity. Dissolving the compound in water will also free the ions. As a result, those solutions will also conduct electricity.

Conductivity under different states distinguishes between ionic compounds, molecular compounds, and metals.

  • Ionic compounds conduct electricity when melted but not as a solid.
  • Molecular compounds have no charged particles. They do not conduct electricity even when melted.
  • Valence electrons in metals are free to move both when the metal is a solid and when it is melted. Metals conduct electricity under both solid and liquid states.
4 0
3 years ago
Other questions:
  • under certain water​ conditions, the free chlorine​ (hypochlorous acid,​ hocl) in a swimming pool decomposes according to the la
    9·1 answer
  • What is the number of carbon atoms in the ring portion of the haworth structure of glucose?
    15·1 answer
  • Mixing magnesium and aluminum together produces an excellent lightweight material from which to make airplane parts what is this
    8·2 answers
  • If 14.5 grams of silver nitrate (molar mass =169.88g/mol) reacts with aluminum chloride. How many grams of aluminum nitrate (mol
    14·1 answer
  • What happens when the angle of the sun is perpendicular to the Earth's surface?
    8·1 answer
  • Its eeeeeeeeeeeezzzzzzzzzzzzzzzz science
    6·1 answer
  • Which best explains the importance of indicator species?
    12·1 answer
  • SCIENCE, PLEASE HELP.
    10·2 answers
  • Uranium, an important component of both nuclear weapons and nuclearreactors, has two major isotopes, U-238, which has a half-lif
    10·1 answer
  • IV. Provide the chemical Name of below acid or base.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!