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
Mumz [18]
4 years ago
9

4NH3 (g)+502(g)->6H20g)+4NOg) What is the enthalpy change for this reaction?

Chemistry
1 answer:
Feliz [49]4 years ago
7 0
Enthalpy is energy of bonds broken - energy of bonds formed. Here, the NH3 and O2 are broken and H2O and NO are formed. So the energy to break the NH3 bonds is 3 times the amount of energy it takes to break a N-H single bond (because there are three of them in a NH3 molecule) and then multiplied by 4 because there are four particles.

So the energy of the bonds broken is 12x the energy to break a N-H single bond plus 5x the amount of energy to break an O—O double bond (you don’t multiply this by anything because in each O2 molecule there is only one bond).

The energy of the bonds formed is 6*2 = 12 Times the amount of energy for a O-H single bond plus 4 times the amount of energy required to break a N—O double bond.

Subtract energy of bonds broken - energy of bonds formed and this is the change in enthalpy.

To know what type of bond it is, draw the Lewis structure.
You might be interested in
Solve the equation 5m+4=7m+6​
ioda
The equation of 5m+4=7m+6 is equal to m=-1
7 0
3 years ago
What is a insect and name one.
lidiya [134]

Answer:

a ladybug I hope this helps you

7 0
2 years ago
Read 2 more answers
How far apart must two point charges of 75.0 nC (typical of static electricity) be to have a force of 1.00 N between them? (answ
Jet001 [13]

Answer:

7.12 mm

Explanation:

From coulomb's law,

F = kqq'/r².................... Equation 1

Where F = force, k = proportionality constant, q and q' = The two point charges, r = distance between the two charges.

Make r the subject of the equation,

r = √(kqq'/F).......................... Equation 2

Given: q = q' = 75.0 nC = 75×10⁻⁹ C, F = 1.00 N

Constant: k = 9.0×10⁹ Nm²/C².

Substitute into equation 2

r = √[ (75×10⁻⁹ )²9.0×10⁹/1]

r = 75×10⁻⁹.√(9.0×10⁹)

r = (75×10⁻⁹)(9.49×10⁴)

r = 711.75×10⁻⁵

r = 7.12×10⁻³ m

r = 7.12 mm

Hence the distance between the point charge = 7.12 mm

3 0
3 years ago
Which best discribe a role of animal in the water cycle
77julia77 [94]
Animals contribute water mainly through breathing, perspiration and urination. ... When droplets of sweat evaporate from the surface of an animal's skin, they take a bit of the animal's body heat with them. They also turn into water vapor and enter the water cycle, just like water evaporating from plant leaves.
5 0
3 years ago
Read 2 more answers
Lake Michigan holds 1.3 x 1015 gallons of water. If just Chicago removed water from the
Lerok [7]

1.3 x 10¹⁵ : 1.2 x 10⁹ = 1.083 x 10⁶

5 0
2 years ago
Other questions:
  • In the combined gas law, if the volume is decreased, what happens to the temperature if pressure remains constant?
    15·1 answer
  • PLEASE HELP...............................................
    5·1 answer
  • A microwave can have a frequency of 3.8 X 1010Hz. How much energy does this microwave give off in joules?
    13·1 answer
  • QUESTION 1
    11·1 answer
  • A sample of seawater consists of water, sodium ions, chloride ions, and several other dissolved salts. These ions and salts are
    7·1 answer
  • An acid and a base react to form salt and water. Which of the following best describes this type of chemical reaction? Redox Neu
    12·2 answers
  • ¿Cómo cada una de las siguientes condiciones cambiaría la velocidad de la reacción indicada? Explique
    11·1 answer
  • Which of the following statements about ions is NOT CORRECT?
    15·1 answer
  • How do double replacement reactions relate to Combustion reactions
    12·1 answer
  • Using the image below, describe in at least 2 paragraphs, what is happening with the arrows. Name and explain the processes and
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!