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
lys-0071 [83]
3 years ago
7

Is the reaction between methane and oxygen endothermic or exothermic? Explain why we burn fossil fuels, such as natural gas.

Chemistry
1 answer:
vladimir1956 [14]3 years ago
6 0
The thing that governs whether a reaction is exothermic is the energy given out / used up to break / form the bonds in the reaction. 

<span>When two substances react, the bonds in those substances first break up, releasing energy, before re-forming in a different way, taking in energy. The nature of the bonds that are broken up and reformed determines whether more energy is given out (exothermic) or taken in (endothermic)</span>
You might be interested in
Classify each of the following chemical reactions.
natulia [17]
1. Synthesis or Combination reaction
2. Double replacement reaction
3. Single Replacement reaction
4. Decomposition reaction

Please mark as brainliest if this helped!
7 0
3 years ago
Read 2 more answers
Is this right??? If not gimme da right answer plz
NemiM [27]

Answer:

yeah

Explanation:

well, probably. they kicked me out of math class because I put a live chicken in the classroom and it pooped everywhere, so I had to clean it up and bring it back where I found it (which is the side of the road.)

3 0
3 years ago
Read 2 more answers
The volume of a gas is the same as its _____.
AleksandrR [38]

The volume of a gas is the same as its CONTAINER.

Gases generally has no shape and no definite volume. When a gas is placed in a container, the gas usually takes the shape and the volume of the container, that is, the gas fills up all the available spaces in the container. Thus, the volume of a gas will always be the same as its container. This is in contrast with solids, which have definite shape and volume and liquids, which have definite volume but no fixed shape.

8 0
3 years ago
Read 2 more answers
State what would be observed when the following pairs of reagents are mixed in a test tube.
Mandarinka [93]

Answer:

(i). C6H2COOH and Na2CO3(aq)

observation: <u>Bubbles</u><u> </u><u>of</u><u> </u><u>a</u><u> </u><u>colourless</u><u> </u><u>gas</u><u> </u><u>(</u><u>carbon</u><u> </u><u>dioxide</u><u> </u><u>gas</u><u>)</u>

(ii) CH3CH2CH2OH and KMnO4 /H

observation: <u>The</u><u> </u><u>orange</u><u> </u><u>solution</u><u> </u><u>turns</u><u> </u><u>green</u><u>.</u>

[<em>This</em><em> </em><em>is</em><em> </em><em>because</em><em> </em><em>oxidation</em><em> </em><em>of</em><em> </em><em>propanol</em><em> </em><em>to</em><em> </em><em>propanoic</em><em> </em><em>acid</em><em> </em><em>occurs</em>]

(iii) CH3CH2OH and CH3COOH + conc. H2SO4

observation: <u>A</u><u> </u><u>sweet</u><u> </u><u>fruity</u><u> </u><u>smell</u><u> </u><u>is</u><u> </u><u>formed</u><u>.</u>

[<em>This</em><em> </em><em>is</em><em> </em><em>because</em><em> </em><em>an</em><em> </em><em>ester</em><em>,</em><em> </em><em>diethylether</em><em> </em><em>is</em><em> </em><em>formed</em><em>]</em>

(iv) CH3CH = CHCH3 and Br2 /H2O

observation: <u>a</u><u> </u><u>brown</u><u> </u><u>solution</u><u> </u><u>is</u><u> </u><u>formed</u><u>.</u>

4 0
3 years ago
Which one of these samples contains the smallest number of molecule?
erma4kov [3.2K]

Answer:

E) 1.0L of He at STP

Explanation:

8 0
3 years ago
Other questions:
  • Melting can be best described as a process in which molecules
    15·1 answer
  • What are the three steps scientists take to evaluate a scientific explanation
    14·1 answer
  • Sodium and chloride ions readily combine because they have opposite charges.
    7·1 answer
  • Summarize Le Chatelier’s principle with a general rule. (In the simplest way you can, thanks)
    14·1 answer
  • When you breathe the first step is that your lungs expand. why is this step needed
    6·1 answer
  • NEED HELP QUICK!!!!!!!!!!!!!!
    15·2 answers
  • In the simulation, open the Micro mode, then select the solutions indicated below from the dropdown list above the beaker. The b
    9·1 answer
  • An object has a mass of 20 g and a volume of 5 mL what is the objects density
    8·1 answer
  • What is the pH of a solution whose hydronium concentration is 3.5 x 10^(-3) M?<br><br> Thanks!
    10·1 answer
  • What is your streak and what fact is it?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!