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
goldfiish [28.3K]
3 years ago
11

Rusting is a chemical process that changed the strength and integrity of objects made of iron or iron alloys. Which of the follo

wing statements correctly describes the rusting process below?
4 Fe(s) + 3O2 (g) 2 Fe2O3 (s)

Iron is reduced to iron ions in this reaction.

The oxidizing agent in this reaction is iron metal.

Iron oxide is the reducing agent in this reaction.

Oxygen was reduced over the course of this reaction.
Chemistry
2 answers:
pishuonlain [190]3 years ago
6 0
Among the choices provided, the statement that correctly describes the rusting process below is that "Oxygen was reduced over the course of this reaction" as <span> iron can't be the oxidizing agent, because it is the one being oxidized.

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions here.
</span>
s2008m [1.1K]3 years ago
4 0

Answer : The correct option is, Oxygen was reduced over the course of this reaction.

Explanation :

Iron rusting : A chemical process in which the an iron nail react with water and oxygen to give iron oxide as a product. Rusting of iron is an oxidation-reduction reaction in which iron losses electrons to oxygen atom.

Oxidation reaction : A substance looses its electrons. In this oxidation state increases.

Reduction reaction : A substance gains electrons. In this oxidation state decreases.

The balanced chemical reaction for rusting of irons is,

4Fe(s)+3O_2(g)\rightarrow 2Fe_2O_3(s)

Half reactions of oxidation and reduction are :

Oxidation : Fe(s)\rightarrow Fe^{3+}+3e^-

Reduction : \frac{1}{2}O_2+2e^-\rightarrow O^{2-}

From this reaction we conclude that the electrons are getting transferred from iron to oxygen.  That means in this reaction, oxygen is an oxidizing agent and iron is a reducing agent.

Hence, the correct option is, Oxygen was reduced over the course of this reaction.

You might be interested in
I will give Brainliest!!! What kind of atoms makeup C12H22O11?
Goshia [24]

Answer:

carbon, hydrogen, and oxygen atoms

Explanation:

brainliest pls

7 0
2 years ago
Read 2 more answers
Please help with both
kupik [55]

Answer:

D =Average atomic mass  = 10.801 amu.

5) True

Explanation:

Abundance of B¹⁰= 19.9%

Abundance of B¹¹ = 80.1%

Atomic mass of B¹⁰ = 10 amu

Atomic mass of B¹¹ = 11 amu

Average atomic mass = ?

Solution:

Average atomic mass  = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass)  / 100

Average atomic mass  = (10×19.9)+(11×80.1) /100

Average atomic mass =  199 + 881.1 / 100

Average atomic mass  = 1080.1 / 100

Average atomic mass  = 10.801 amu.

2)A chemical reaction is one in which a new elements is created

True

False

Answer:

In chemical reaction new substances are created.

For example:

Photosynthesis:

It is the process in which in the presence of sun light and chlorophyll by using carbon dioxide and water plants produce the oxygen and glucose.

Carbon dioxide + water + energy →   glucose + oxygen

water is supplied through the roots, carbon dioxide collected through stomata and sun light is capture  by chloroplast.

Chemical equation:

6H₂O + 6CO₂ + energy  →   C₆H₁₂O₆ + 6O₂

it is known from balanced chemical equation that 6 moles of carbon dioxide react with the six moles of water and created one mole of glucose and six mole of oxygen.

8 0
3 years ago
If you were to take several random samples from a pure substance the samples
Nataliya [291]
Would all have the same ratio of elements.
3 0
3 years ago
Read 2 more answers
How does most ocean water return to the ocean in the water cycle? Through precipitation over the ocean By flowing through rivers
andrey2020 [161]
Surface run off and when water infiltrates land it will start to make its way to a body of water.
7 0
2 years ago
A bicycle completed the first 400.0 m of a ride in 86.8 s. What was the bicycle's average speed in kilometers per hour?
konstantin123 [22]

Answer:

16.6 km/h  

Step-by-step explanation:

Speed = distance/time

           = 400.0 m/86.8 s

           = 4.608 m/s               Convert kilometres to metres

Speed = 4.608m/s × (1 km/1000 m)

           = 0.004 608 km/s     Convert seconds to hours

Speed = 0.004 608 km/s × (3600 s/1 h)

           = 16.6 km/h

3 0
3 years ago
Other questions:
  • 1. The development of the cathode ray tube led to the discover of what subatomic particle?
    13·1 answer
  • A student reacted NiS2 (MM = 122.83 g/mol) with O2 (MM=32.00 g/mol) to make SO2 (MM=64.07 g/mol) according to this balanced equa
    9·1 answer
  • Consider the formation of the three solutionsshown in the table.
    10·1 answer
  • The molecular weight of NaCl is 58.44 grams/moles. How many grams of NaCl are found in a beaket with 100 ml of a 0.0050 M soluti
    13·1 answer
  • SHOW ALL WORK AND INCLUDE UNITS
    7·1 answer
  • Please help ASAPPPPPPPPPPPPPPP
    8·1 answer
  • How many grams of O₂ are required to react completely with 14.6 g of Na to form sodium oxide, Na₂O?
    9·1 answer
  • How many liters of carbon dioxide will be produced when 89.5 L of ethane are burned? (One mole of any gas occupies 22.4 L under
    13·1 answer
  • Do Acids increase the concentration of hydronium ions in solution by donating hydrogen ions to water molecules
    11·1 answer
  • Why are thiols more nucleophilic than alcohols?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!