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
kap26 [50]
1 year ago
8

Which reactions are oxidation-reduction reactions? check all that apply. fes(s) 2hcl(aq) → h2s(g) fecl2(g) agno3(aq) nacl(aq)

→ agcl(s) nano3 2c3h6(g) 9o2(g) → 6co2(g) 6h2o(g) fe2o3(s) 3co(g) → 2fe(l) 3co2(g)
Chemistry
1 answer:
Dafna1 [17]1 year ago
7 0

oxidation-reduction reactions are -

  1. 2C3H6(g) + 9O2(g) → 6CO2(g) + 6H2O(g)
  2. Fe2O3(s) + 3CO(g) → 2Fe(l) + 3CO2(g)

For reaction,

  1. 2C3H6(g) + 9O2(g) → 6CO2(g) + 6H2O(g)

<u>On reactant side</u>:

Oxidation state of Carbon = +2

Oxidation state of Oxygen = 0

<u>On product side:</u>

Oxidation state of Carbon = +4

Oxidation state of Oxygen = -2

Here, carbon's oxidation state is rising from +2 to +4. As a result, it is oxidizing and the oxygen's oxidation state is decreasing from 0 to -2. As a result, it is decreasing.

For reaction,

                Fe2O3(s) + 3CO(g) → 2Fe(l) + 3CO2(g)

<u>When reacting:</u>

Iron's oxidation state is +3.

Carbon's oxidation state is +2.

<u>On product side:</u>

Iron's oxidation state is zero.

Carbon's oxidation state is +4.

Here, carbon's oxidation state is rising from +2 to +4. As a result, it is being oxidized and the iron's oxidation state is changing from +3 to 0. As a result, it is decreasing.

To learn more about oxidation-reduction from given link

brainly.com/question/5794822

#SPJ4

You might be interested in
How many nuclei of 238 92 U 92 238 U remain in a rock if the activity registers 290 decays per second?(Note that the half life o
Rom4ik [11]

Answer:

Use the activity formula,  

T1/2 = 4.468 x 10^9 yr x 365 x 24 x 3600 = 1.409 x 10^17 sec  

l = ln(2)/T1/2 = ln(2)/1.409 x 10^17 = 4.91932697 x 10^-18 s-1  

DN/Dt = lN, 265 = 4.91932697 x 10^-18 x N  

<u><em>N = 5.38 x 10^19 nuclei</em></u>

7 0
3 years ago
How are water-based solutions formed?
drek231 [11]

Answer:

D. Solutions are formed when the water’s polar molecules separate the polar molecules of an ionic or molecular compound.

Explanation:

Solutions are homogeneous mixtures formed by interaction between solutes and solvents.

Water based solutions have water as the solvents and mostly ionic and molecular compounds as their solutes.

Water is a polar solvent that is capable of dissolving many compounds by hydrating them. The molecules of water surrounds the solute and forces them  to separate.

6 0
3 years ago
How many mL of 0.013 M potassium hydroxide are required to reach the equivalence point in the titration of 75 mL 0.166 M hydrocy
umka21 [38]

Answer:

957.7mL

Explanation:

Using the formula below;

CaVa = CbVb

Where;

Ca = concentration of acid (M)

Va = volume of acid (mL)

Cb = concentration of base (M)

Vb = volume of base (mL)

According to the information provided in this question:

Ca = 0.166 M

Cb = 0.013 M

Va = 75mL

Vb = ?

Using CaVa = CbVb

0.166 × 75 = 0.013 × Vb

12.45 = 0.013Vb

Vb =12.45/0.013

Vb = 957.7mL

6 0
3 years ago
The box in the above picture is falling from the top of a building to the ground. Two major forces are acting on the box as it f
MAVERICK [17]

Answer:

I think it's B

Explanation:

apologies if I get this wrong

8 0
3 years ago
Read 2 more answers
Help its rlly hard pls
Blizzard [7]

Answer:

Volume

Explanation:

Volume is the amount of space taken up or occupied by an object.

3 0
3 years ago
Read 2 more answers
Other questions:
  • Which statement correctly describes the rate of decomposition of SO3 at equilibrium?
    15·1 answer
  • Why is it important to clean and care for cuts on your skin
    6·1 answer
  • Next to each formula, write the number of atoms of each element found in one unit of the compound
    10·1 answer
  • When H2(g) reacts with Cl2(g) to form HCl(g) , 185 kJ of energy are evolved for each mole of H2(g) that reacts. Write a balanced
    5·1 answer
  • what would be the total mass of the products of a reaction in which 10 grams of water decomposes into hydrogen and oxygen (and n
    14·2 answers
  • Half-life is always given in units of time
    11·1 answer
  • Which is less reactive Chlorine or Potassium? Explain your answer. Thx​
    5·1 answer
  • What is the half-life of Technetium-99 if a 200 gram sample decays to 50 grams in 639,000 years?
    5·1 answer
  • using the balanced equation below how many grams of lead(||) sulfate would be produced from the complete reaction of 23.6 g lead
    5·1 answer
  • What is the temperature if 2L of 3moles HCl react with 2atm?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!