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
Monica [59]
2 years ago
13

During what change is heat absorbed?

Chemistry
2 answers:
Alisiya [41]2 years ago
6 0
Endothermic reactions absorb heat and exotbermic releases heat
Ostrovityanka [42]2 years ago
3 0

Answer: <u>endothermic</u>

<u />

Explanation: <u>A chemical reaction or physical change is endothermic if heat is absorbed by the system from the surroundings. </u>

You might be interested in
Which of the following is an example of anaerobic respiration?
Andrews [41]
Respiring while swimming underwater
Because anaerobic respiration means respiration with no oxygen, and there is no oxygen underwater
8 0
4 years ago
Teo3 lewis structure
svetoff [14.1K]

Answer:

here. hope it helps!

Explanation:

5 0
1 year ago
Write a balanced equation for the complete oxidation reaction that occurs when ethane burns in air
damaskus [11]
<h3>Balanced equation : 2C₂H₆ (g) + 7O₂ (g) ⟶ 4CO₂ (g) + 6H₂O (ℓ)</h3><h3>Further explanation</h3>

Alkanes are saturated hydrocarbons that have single bonds in chains

General formula for alkanes :

\tt \large{\bold{C_nH_{2n+2}}

Hydrocarbon combustion reactions (specifically alkanes)

\large {\box {\bold{C_nH _ (_2_n _ + _ 2_) + \dfrac {3n + 1} {2} O_2 \Rightarrow nCO_2 + (n + 1) H_2O}}}

So that the burning of ethane with air (oxygen):

\tt C_2H_6+\dfrac{7}{2}O_2\rightarrow 2CO_2+3H_2O

2C₂H₆ (g) + 7O₂ (g) ⟶ 4CO₂ (g) + 6H₂O (ℓ)

or we can use mathematical equations to solve equilibrium chemical equations by giving the coefficients for each compound involved in the reaction

C₂H₆ (g) + aO₂ (g) ⟶ bCO₂ (g) + cH₂O (ℓ)

C : left 2, right b ⇒ b=2

H: left 6, right 2c⇒ 2c=6⇒ c= 3

O : left 2a, right 2b+c⇒ 2a=2b+c⇒2a=2.2+3⇒2a=7⇒a=7/2

6 0
3 years ago
Burning alcohol for fuel is a very efficient process. Please select the best answer from the choices provided
Vedmedyk [2.9K]
Burning alcohol for fuel has been used throughout history. There are some alcohols that are the best ones to use as fuels because of their nature and can be synthesized chemicaly or biologicaly. Except, some of those alcohol also has a bad effect when burned for fuel as it would cause serious negative chemical effects when exposed to the human body such as blindness or death. Therefore, the best answer would be False.
6 0
3 years ago
Read 2 more answers
The salts you tested were held together by ionic bonds. The compounds were made of two types of ions, positive and negative, tha
vladimir1956 [14]

Answer:

A an ionic compound that completely dissolves in water, forming many ions

Explanati

5 0
3 years ago
Read 2 more answers
Other questions:
  • Why is the enthalpy of formation of oxygen zero?
    7·1 answer
  • Coal is transported from mine to plant via “unit trains” that usually consist of 100 cars each carrying 100 tons of coal. If one
    14·1 answer
  • At 25.0°c, a solution has a concentration of 3.179 m and a density of 1.260 g/ml. the density of the solution at 50.0°c is 1.249
    12·1 answer
  • What three conditions aid in the decomposition of dead organisms?
    5·1 answer
  • When something slows it’s acceleration is
    9·1 answer
  • Identify the tropical zones and the temperate zones
    8·2 answers
  • Early Earth was largely anoxic with very little oxygen present in the atmosphere. However, approximately 2 billion years ago, a
    14·1 answer
  • What is the percent composition of (NH4)2S?
    5·1 answer
  • Hellppppp
    7·1 answer
  • Distinguish between single and double replacement reactions and give an example of<br> each.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!