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
Valentin [98]
2 years ago
9

Teniendo en cuenta los siguientes fenómenos: ebullición del agua- movimiento de un cuerpo- disolución de sal en agua- combustión

de la leña- oxidación del hierro – evaporación del alcohol- fusión del cobre – descomposición del agua en hidrógeno y oxígeno. Indica cuales se tratan de reacciones químicas. Justifica tu respuesta.
Chemistry
1 answer:
miv72 [106K]2 years ago
3 0

Answer:

Las siguientes son reacciones químicas;

combustión de leña

oxidación del hierro

descomposición del agua en hidrógeno y oxígeno

Explanation:

Una reacción química da como resultado la formación de una (s) sustancia (s) nueva (s), mientras que un cambio físico no conduce a la formación de una sustancia nueva.

Las siguientes son reacciones químicas;

combustión de leña: la combustión de madera implica la oxidación del carbono según la reacción; C (s) + O2 (g) -------> CO2 (g)

oxidación del hierro: La oxidación del hierro conduce a la formación de óxidos de hierro. Como; 2Fe (s) + O2 (g) ----> 2FeO (s)

descomposición del agua en hidrógeno y oxígeno: esta es una reacción química en la que el agua se descompone de la siguiente manera; 2H2O (l) -----> 2H2 (g) + O2 (g)

Todos estos procesos enumerados anteriormente conducen a la formación de nuevas sustancias, por lo tanto, son reacciones químicas.

You might be interested in
If a fluorine atom and nitrogen atom combine to form a compound, what type of bond will they form
dmitriy555 [2]

Answer:

I guess covalent bond is formed

4 0
3 years ago
PLEASE ANSWER!!! Sulfuric acid (a component of acid rain) reacts with limestone (calcium carbonate) to produce calcium sulfate a
Salsk061 [2.6K]

Answer:

D is the best choice. Those percentages, are giving you the information about how concentrated are the solutions.  As 0.015 is so concentrated, this solution will damage the structures more quickly

Explanation:

3 0
3 years ago
Read 2 more answers
According to the work principle, the ration of work output to work input is always _____.
vekshin1

Answer:

less than one.

Explanation:

5 0
2 years ago
Fill in the blanks.
seropon [69]

Answer:

vcfg

Explanation:

4 0
3 years ago
sphingomyelin contains a fatty acid linked by an ________ bond and phosphocholine linked via the c-3 hydroxyl group of sphingosi
irga5000 [103]
The answer is amide



your welcome

6 0
3 years ago
Other questions:
  • Rusting of iron is an example of oxidation reduction or transmutation
    10·1 answer
  • A 0.250 gram chunk of sodium metal is cautiously dropped into a mixture of 50.0 grams of water and 50.0 grams of ice, both at 0
    10·1 answer
  • you rent a car in Germany with a gas mileage rating of 12.8km/L. What is its rating in miles per gallon?
    13·2 answers
  • What element is located in group 2, period 2?
    5·1 answer
  • The two most abundant gases in the atmosphere are select one:
    11·1 answer
  • When the pressure and number of particles are kept constant for a sample of gas, which of the following is also constant for the
    13·1 answer
  • How many oxygen atoms are there in the following compound: 2HNO3<br> 3<br> 5<br> 6<br> 12
    11·2 answers
  • The pressure of a 250 mL sample of gas is 105 kPa. What would be the pressure if the volume were increased to 375 ml?
    7·1 answer
  • Calculate the entropy change for the surroundings of the reaction below at 350K: N2(g) + 3H2(g) -&gt; 2NH3(g) Entropy data: NH3
    7·1 answer
  • Write a balanced chemical equation for the following: magnesium metal is burned in oxygen to produce magnesium oxide.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!