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
zheka24 [161]
3 years ago
15

Hydrogen peroxide decomposes to water and oxygen at constant pressure by the following reaction: 2H2O2(l) → 2H2O(l) + O2(g) ΔH =

-196 kJ Calculate the value of q (kJ) in this exothermic reaction when 3.00 g of hydrogen peroxide decomposes at constant pressure? Hydrogen peroxide decomposes to water and oxygen at constant pressure by the following reaction: 2H2O2(l) → 2H2O(l) + O2(g) ΔH = -196 kJ Calculate the value of q (kJ) in this exothermic reaction when 3.00 g of hydrogen peroxide decomposes at constant pressure? -1.73 × 104 kJ 1.92 kJ -8.65 kJ -17.3 kJ -0.0289 kJ
Chemistry
1 answer:
ziro4ka [17]3 years ago
6 0

Answer:

-8.64kJ

Explanation:

Based on the reaction:

2 H₂O₂(l) → 2 H₂O(l) + O₂(g) ΔH = -196 kJ

When 2 moles of hydrogen peroxide (H₂O₂) descomposed, there are released -196kJ of energy.

Now, if 3,00g of hydrogen peroxide react, moles are:

3.00g × (1mol / 34.01g) = 0.0882moles H₂O₂

Releasing:

0.0882moles H₂O₂ × (-196kJ / 2mol H₂O₂) = <em>-8.64kJ</em>

You might be interested in
An adiabatic Turbine has R-134a as the working fluid. The inlet has a pressure of 200 kPa and a temperature of 20°C while the ou
Reptile [31]

Hey there!:

Detailed solution is shown below ask if any doubt :

3 0
3 years ago
Hydrogen fuel cells are a promising alternative to gasoline engines in part because they release water instead of carbon dioxide
enot [183]

Answer:

The correct answer is option (B) Two molecules of H2 and a molecule of O2 must collide at one time

Explanation:

2H2(g) + O2(g) → 2 H2O(g)

   2             1            2

Considering the given reaction, for water molecule to be form, two molecules of hydrogen and one molecule of oxygen must collide at the same time. The product obtained from the collision is two molecules of water as steam. 2 H2O(g)

6 0
4 years ago
Read 2 more answers
Which is NOT part of a normal microscope?<br> a.ocular<br> b. nosepiece<br> c.stage<br> d.objective
Evgesh-ka [11]

Answer:

I believe it is a Nose piece

Explanation:

3 0
3 years ago
Read 2 more answers
Which substance below will exhibit hydrogen bonding between the molecules of the substance?
Morgarella [4.7K]
I think it might just might be e
5 0
3 years ago
For the reaction: 3 H2(g) + N2(g) &lt;--&gt; 2 NH3(g), the concentrations at equilbrium were [H2] = 0.10 M, [N2] = 0.10 M, and [
masya89 [10]

The equilibrium constant, k of the reaction in which case, the concentrations of the given reactants and products are as indicated is; Choice A; K = 3.1 x 10⁵

<h3>What is the equilibrium constant , k of the reaction as described in the task content?</h3>

It follows from above that the concentrations of the reactants and products are as follows; [H2] = 0.10 M, [N2] = 0.10 M, and [NH3] = 5.6 M at equilibrium.

Hence, the equilibrium constant of the reaction in discuss is;

K = [5.6]²/[0.10]³[0.10]

k = 5.6² × 10⁴

k = 3.136 × 10⁵

K = 3.1 × 10⁵.

Read more on equilibrium constant;

brainly.com/question/1619133

#SPJ1

5 0
2 years ago
Other questions:
  • Where is lithium used in the body?
    14·2 answers
  • The mass spectrum of a hypothetical element shows that 78.21% of the atoms have a mass of 27.977 u, 1.346% have a mass of 28.976
    6·1 answer
  • 90 POINTSSSS!!!
    8·1 answer
  • What is the difference between a solute and a solvent?
    5·1 answer
  • A/an __ is a type of mass movement that occurs when a thin block of soil, rock, and debris separates from the underlying bedrock
    6·1 answer
  • A crime lab received a 235-gram sample. The sample had a molecular mass of 128.1 grams and the empirical formula is CH2O. How ma
    7·1 answer
  • Calcium chloride contains only calcium and chloride. What is the formula for this compound?
    13·2 answers
  • Acid-catalyzed dehydration of an alcohol is an equilibrium situation. How was the reaction forced to completion in Acid-Catalyze
    9·1 answer
  • Stimulation optimization helps
    12·1 answer
  • Moby eats three-sixths of a pizza. Which fraction is equivalent to three-sixths?​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!