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
mihalych1998 [28]
3 years ago
14

A chemist designs a galvanic cell that uses these two half-reactions:

Chemistry
1 answer:
Virty [35]3 years ago
8 0

Answer:

MnO4⁻ (aq) + 8H⁺ (aq) + 5Fe³⁺ (aq) →Mn(aq)²⁺ + 4H2O (l) + 5Fe²⁺(aq)

Explanation:

a)

MnO4⁻ (aq) + 8H⁺ (aq) + 5e⁻ → Mn(aq)²⁺ + 4H2O (l)

b)

5Fe³⁺ (aq) +5e⁻ → 5Fe²⁺(aq)

c)

MnO4⁻ (aq) + 8H⁺ (aq) + 5Fe³⁺ (aq) →Mn(aq)²⁺ + 4H2O (l) + 5Fe²⁺(aq)

You might be interested in
Every element has a unique amount of
tamaranim1 [39]
Protons is the answer
5 0
3 years ago
the atom was thought to be indivisible. Explain the significance of Thomson's concept of the electron.
Ludmilka [50]

Answer:

Thomson's experiments with cathode ray tubes showed that all atoms contain tiny negatively charged subatomic particles or electrons. Thomson's plum pudding model of the atom had negatively-charged electrons embedded within a positively-charged "soup.

4 0
3 years ago
In a nuclear fusion reaction, the mass of the products is(1) less than the mass of the reactants because some
dusya [7]
The correct answer is option 1. The mass of the products is less than the mass of the reactants because some of the mass has been converted to energy. Fusion reaction happens when two or more nuclei combine or collide to form an element with a higher atomic number. In this process, some of the matter of the fusing nuclei is converted to energy.
4 0
3 years ago
When NH3(g) reacts with N2O(g) to form N2(g) and H2O(g), 105 kcal of energy are evolved for each mole of NH3(g) that reacts. Wri
Ganezh [65]

Answer : The balanced chemical equation is,

2NH_3(g)+3N_2O(g)\rightarrow 4N_2(g)+3H_2O(g)+210kcal

Explanation :

Balanced chemical equation : It is defined as the number of atoms of individual elements present on the reactant side must be equal to the number of atoms of individual elements present on product side.

The given unbalanced chemical reaction is,

NH_3(g)+N_2O(g)\rightarrow N_2(g)+H_2O(g)+105kcal

This chemical reaction is an unbalanced reaction because in this reaction, the number of atoms of individual elements are not balanced.

In order to balanced the chemical reaction, the coefficient 2 is put before the NH_3, the coefficient 3 is put before the N_2O\text{ and }H_2O and the coefficient 4 is put before the N_2.

The energy evolved in this reaction = 105Kcal\times 2=210Kcal

Thus, the balanced chemical reaction will be,

2NH_3(g)+3N_2O(g)\rightarrow 4N_2(g)+3H_2O(g)+210kcal

7 0
3 years ago
Make the equations for the reactions between calcium and hydrochloric acid, name the products.
Goryan [66]

Answer:

Calcium carbonate reacts with hydrochloric acid to form carbon dioxide gas. 2HCl (aq) + CaCO 3(s) CaCl 2 (aq) + CO 2(g) + H 2 O (l).

3 0
3 years ago
Other questions:
  • Lipids that are liquid at room temperature are called oils <br> a. True <br> b. False
    11·1 answer
  • Which statement describes KCI(aq)?
    8·1 answer
  • If a reaction has a theoretical yield of 10.0 g and a student does the reaction and
    9·2 answers
  • Draw structures for all constitutional isomers with the molecular
    15·1 answer
  • Grignard reactions are highly exothermic and are performed in ether solvent. There is a real risk of fire during this reaction.
    11·1 answer
  • When mud and water are combined, the result is ______.
    10·2 answers
  • What type of chemical reaction is this CHA + 0,CO, + H2O
    10·1 answer
  • A gas sample is held at constant pressure. The gas occupies 2.97 L of volume when the temperature is 21.6°C. Determine the tempe
    6·1 answer
  • HELP PLEASE , I NEED A A ON THE TEST I’ll give brain
    5·2 answers
  • What is the percent yield of a reaction in which 200. g of phosphorus trichloride reacts with excess water to form 128 g of HCl
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!