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
weqwewe [10]
3 years ago
5

NItrogen in air reacts at high temperature to form NO2 according to the reaction:

Chemistry
1 answer:
Rina8888 [55]3 years ago
6 0

Answer:

The correct answer is option E.

Explanation:

Structures for the reactants and products are given in an aimage ;

Number of double bonds in oxygen gas molecule = 1

Number of double bonds in nitro dioxide gas molecule = 1

Number of single bond in in nitro dioxide gas molecule = 1

Number of triple bonds in nitrogen gas molecule = 1

N_2+2O_2\rightarrow 2NO_2,\Delta H=?

\Delta H=[2 mol\times \Delta H_{f,NO_2}]-[1 mol\times \Delta H_{f,N_2}-2 mol\times \Delta H_{f,O_2}]

\Delta H_{f,NO_2}=33.18 kJ/mol

\Delta H_{f,N_2}=0 (pure element)

\Delta H_{f,O_2}=0 (pure element )

\Delta H=2 mol\times 33.18 kJ/mol=66.36kJ=15.86 kcal

The enthalpy of the given reaction is 15.86 kcal.

You might be interested in
the equilibrium concentration of hydroxide ion in a saturated iron(ii) hydroxide solution is 1.2 x 10^-5 M at a certain temperat
Anit [1.1K]

From the calculation as shpwn in the procedure below, the equilibrium constant of the substance is 6.9 * 10^-15.

<h3>What is equilibrium constant?</h3>

The equilibrium constant for the solubility of aa solid in solution is called the solubility product Ksp. The Ksp shows the extent to which a solid is dissolved in solution.

Given that;

Fe(OH)2 ⇄Fe^2+ + 2(OH)^-

Ksp = s(2s)^2

We have s as 1.2 x 10^-5 M

So

Ksp = 4s^3

Ksp = 4( 1.2 x 10^-5 )^3

Ksp = 6.9 * 10^-15

Learn more about Ksp:brainly.com/question/27132799

#SPJ1

8 0
2 years ago
Why do we need an isolated system for the law of conservation of mass to be true?
Alex_Xolod [135]

Answer:

The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.

7 0
3 years ago
Read 2 more answers
Drinking energy drinks make people more hyper. What is the independent variable and the dependent variable?
Andreyy89

Answer:

Hi, There!

<em>Drinking energy drinks make people more hyper. What is the independent variable and the dependent variable?</em>

<em>The independent Vairable is the people drinking the energy drinks.</em>

<em>The Dependent variable is is the result which makes people more hyper</em>

Hope this Helps!

5 0
3 years ago
Read 2 more answers
What is the formula for the ionic compound made from Ca and P?​
Evgesh-ka [11]

Answer:

Calcium Phosphate,

Explanation:

Ca3(PO4)2.

4 0
3 years ago
Read 2 more answers
Buffers resist change in pH in a system when?
Sedbober [7]
The answer to this question is <span>b) hydrogen chloride (HCl) is added to the system. This is the only acid/base on the list. Only acids and bases have the potential to directly change pH as they contribute hydronium and hydroxide ions. Glucose, sodium chloride, and sodium bromide do not affect pH in the first place.</span>
5 0
2 years ago
Read 2 more answers
Other questions:
  • What was the robotic vehicle Opportunity designed to do?
    10·2 answers
  • if you were going to invent a new way to power your mobile phone which type of electromatic waves wiuld be most useful to invist
    10·2 answers
  • Which process moves molecules and has these traits?
    11·2 answers
  • 4 Al + 3 O2 --&gt; 2 Al2O3
    7·1 answer
  • What are three factors that limit a population's ability to adapt and survive?
    9·1 answer
  • What are non examples of tissue? Help please
    12·1 answer
  • You have two wires made of two different metals (metal A and metal B). Both wires are the same thickness and length. In one circ
    9·1 answer
  • All of the factors described below could account for the difference in the sizes of the tomatoes. Which describes a way in which
    5·1 answer
  • Balance the following chemical equation by providing the correct coefficients:
    15·1 answer
  • 1234567<br>kkkkkkkkkkkkkk
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!