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
Triss [41]
2 years ago
11

When 1 mol of KBr(s) decomposes to its elements, 394 kJ of heat is absorbed. (a) Write a balanced thermochemical equation.

Chemistry
1 answer:
VladimirAG [237]2 years ago
8 0

The balanced thermochemical equation is

KBr ------- K + 1/2 Br2

<h3>What is thermochemical equation? </h3>

A Thermochemical Equation is defined as the balanced stoichiometric chemical equation which includes the enthalpy change, ΔH.

The chemical equation for the decomposition of potassium bromide to its constituent elements bromine ans potassium :

KBr ----- K + Br2

The balanced thermochemical equation of the decomposition of potassium bromide to its constituent elements potassium and bromide as follows

KBr ------- K + 1/2 Br2

As the heat is absorbed in this reaction therefore, heat is positive.

Thus, we concluded that the balanced thermochemical equation is

KBr ------- K + 1/2 Br2

learn more about thermochemical equation:

brainly.com/question/2733624

#SPJ4

You might be interested in
Calculate either [H3O ] or [OH–] for the solutions below at 25 C.
Marysya12 [62]
Answer is: concentration of hydronium ions is 5,5·10⁻⁸ M.
[OH⁻] = 1,83·10⁻⁷ M; equilibrium concentration.
The Kw (the ionic product for water) at 25°C is 1·10⁻¹⁴ mol²/dm⁶ or 1·10⁻¹⁴ M².<span>
Kw = [H</span>₃O⁺] · [OH⁻].
[H₃O⁺] = Kw ÷ [OH⁻].
[H₃O⁺] = 1·10⁻¹⁴ M² ÷ 1,83·10⁻⁷ M.
[H₃O⁺] = 5,5·10⁻⁸ M.
5 0
3 years ago
Read 2 more answers
How many molecules are in 7.90 moles of CH4?
faltersainse [42]
The ans is 4.76 ×10^24
Steps :
7.90×6.02×10^23
6 0
3 years ago
What is the hydroxide ion concentration of a solution whose pOH is 6.42?
Sergeeva-Olga [200]

Answer : The hydroxide ion concentration of a solution is, 3.8\times 10^{-7}M

Explanation :

As we know that:

pH : It is defined as the negative logarithm of hydrogen ion concentration.

Mathematically,

pH=-\log [H^+]

Similarly,

pOH : It is defined as the negative logarithm of hydroxide ion concentration.

Mathematically,

pOH=-\log [OH^-]

Given:

pOH = 6.42

6.42=-\log [OH^-]

[OH^-]=3.8\times 10^{-7}M

Therefore, the hydroxide ion concentration of a solution is, 3.8\times 10^{-7}M

7 0
3 years ago
PLZ HELP!!
densk [106]
Because the cell membrane (plasmamembrane) is a membrane. Very simply put, you can think of it like a piece of cloth. If you have a piece of cloth, water can move through the small holes, but something large, like e.g. a piece of cheese cannot.

Sana maka tulong
3 0
2 years ago
Read 2 more answers
Which type of bond is a result of the sharing of electrons between two more atoms?
Hatshy [7]

Answer: Covalent Bond

Explanation:

Covalent bond is the type of chemical bond between two atoms that are connected to each other by the sharing of two or more electrons. example is the bond between Dinitrogen

8 0
3 years ago
Read 2 more answers
Other questions:
  • You wish to prepare 1.000 L of a 0.0600 M phosphate buffer at pH 7.640 . To do this, you choose to mix the two salt forms involv
    11·1 answer
  • Density is a measure of (4 points)
    8·2 answers
  • What does it mean for an acid and base to neutralize each other?
    11·1 answer
  • Can you guys answer this??
    11·1 answer
  • Which country from a table would most likely have the highest level of education (on average )and the greatest delay in marriage
    7·2 answers
  • 1. Identify a conjugate acid-base pair in the reaction
    13·1 answer
  • One way to remove lead ion from water is to add a source of iodide ion so that lead iodide will precipitate out of solution: Pb2
    11·1 answer
  • 100 pts Horticulture (HURRY)
    5·2 answers
  • Converts 50° to K<br> Steps pls
    10·1 answer
  • Help I don't understand balancing equations
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!