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
SashulF [63]
2 years ago
7

The mineral rhodochrosite [manganese(II) carbonate, MnCO3] is a commercially important source of manganese. Write a half-reactio

n for the oxidation of the manganese in MnCO3 to MnO2 in neutral groundwater where the principal carbonate species is HCO3–. Add H2O, H+, and electrons as needed to balance the half-reaction.
Chemistry
1 answer:
aleksklad [387]2 years ago
5 0

Answer:

MnCO3 + 2H2O ⇄ MnO2  + HCO3-  + 2e- +3H+

Explanation:

<u>The</u> unbalanced equation

MnCO3 ⇄ MnO2  + HCO3-

In MnCO3, the oxidation number of Mn is +2

In Mno2, the oxidation number of Mn is +4

The change from +2 to +4 requires an addition of  2 electrons (to the right side).

MnCO3 ⇄ MnO2  + HCO3-  + 2e-

The total charge now is -3 on the right side. To balance this we add 3 hydrogen atoms on the right side.

MnCO3 ⇄ MnO2  + HCO3-  + 2e- +3H+

On the right side we have 4 hydrogen atoms in total. On the left side we have 0 hydrogen atoms. So to balance, we have to add 2H2O on the left side

MnCO3 + 2H2O ⇄ MnO2  + HCO3-  + 2e- +3H+

Now the reaction is balanced.

You might be interested in
What subatomic particles make up the nucleus of an atom (select ALL that are in the nucleus)
Ilia_Sergeevich [38]
3 and 4 i would think
3 0
3 years ago
A scientist discovered a microscopic unicellular organism with no nucleus which of the following correctly describes the organis
boyakko [2]
The correct option is this: THE ORGANISM IS A PROKARYOTES.
There are basically two types of cells, prokaryotic and eukaryotic cells. The prokaryotic cells are primitive cells which contain only a few materials which are not well organised. This type of cells is usually found in microscopic organisms. The cells lack organised nucleus and cell organelles which have membranes.<span />
7 0
3 years ago
Read 2 more answers
How many elements are found in the following chemical equation? K + Cl → KCl A. 1 B. 2 C. 3 D. 0
Gnesinka [82]
K is Potassium
Cl is Chlorine 
There are 2 elements.
5 0
3 years ago
Read 2 more answers
How many electrons will each element gain or lose in forming an ion?
Amanda [17]
It depends on the number of valence electrons required to make octet or duplet( in case of H). For example, Nitrogen(atomic number = 7) has electronic configuration(2,5) which means nitrogen has 5 valence electrons and requires 3 more electrons to complete its octet. After gaining 3 electrons from atoms of an element with less electronegativity than N, it forms nitride ion (N ^{-3}). Hope this helps.
8 0
3 years ago
Choose the statement below that is correct for gas particles according to KMT.
rewona [7]

Answer:

2.At a given temperature, the KE of all gases is the same.KE depends only on Kelvin temperature

Explanation:

The kinetic molecular theory of gases provides a succint expalantion and insight into the behaviour of gases. The assumptions of the theory are stated below:

  1. Gases are made up of large number of identical molecules which are moving at different speeds.
  2. Spaces occupied by molecules of gases are negligible compared to the volume of the container.
  3. Molecules of gases are independent of one another.
  4. The molecules collide with themselves and the walls of the container elastically.
  5. The temperature of a gas is a measure of only the average kinetic energy of the molecules.
5 0
3 years ago
Other questions:
  • In an experiment, zinc chlorate decomposed according to the following chemical equation.
    5·2 answers
  • How do catalysts increase the rate of a chemical reaction?
    5·1 answer
  • The constant k for a certain reaction is measured at two different temperatures:Temperature K376.0°C 4.8x 10^8280.0°C 2.3 x 10^8
    13·1 answer
  • Chem help please. i cant figure out this problem
    7·1 answer
  • 6.
    6·1 answer
  • How many moles of N are in 0.203 g of N2O?
    14·2 answers
  • HELP ME PLEASE ASAP. I'LL MARK YOU BRAINLIEST <br> ITS NUMBER 23.
    6·1 answer
  • What happen when the nitrate of an alkali metal is heatad?<br>​
    9·2 answers
  • If 5.00 g of O2 gas has a volume of 7.20 L at a certain temperature and pressure, what volume does 15.0 g of O2 have under the s
    11·1 answer
  • Describe how to prepare 2.00 L of a 0.25 M aqueous KNO3 solution
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!