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
satela [25.4K]
3 years ago
13

Determine the amount of heat (in kJ) given off when 1.26 × 104 g of ammonia are produced according to the equation N2(g) + 3H2(g

) ⟶ 2NH3(g) ΔH°rxn = −92.6 kJ/mol Assume that the reaction takes place under standardstate conditions at 25°C.
Chemistry
1 answer:
WARRIOR [948]3 years ago
7 0

<u>Answer:</u> The enthalpy of the reaction for given amount of ammonia will be -3431.3 kJ.

<u>Explanation:</u>

To calculate the number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}  

<u>For ammonia:</u>

Given mass of ammonia = 1.26\times 10^4g=1260g

Molar mass of ammonia = 17 g/mol

Putting values in above equation, we get:

\text{Moles of ammonia}=\frac{1260g}{17g/mol}=74.11mol

We are given:

Moles of ammonia = 74.11 moles

For the given chemical reaction:

N_2(g)+3H_2(g)\rightarrow 2NH_3(g);\Delta H^o_{rxn}=-92.6kJ

By Stoichiometry of the reaction:

If 2 moles of ammonia produces -92.6 kJ of energy.

Then, 74.11 moles of ammonia will produce = \frac{-92.6kJ}{2mol}\times 74.11mol=-3431.3kJ of energy.

Thus, the enthalpy of the reaction for given amount of ammonia will be -3431.3 kJ.

You might be interested in
True or false?
sertanlavr [38]
The answers are :
1 - F
2- T
5 0
2 years ago
Read 2 more answers
If an atom with a mass number of 27 has 14 neutrons,it is an isotope of which element​
kkurt [141]

Answer:

the number of neutrons in above isotope = A - Z = 27 - 13 = 14. Note: The molar mass of aluminium, which is average of atomic masses of all isotopes = 26.981538 g/mol, since 13Al27 is the major isotope.

Explanation:

   

5 0
3 years ago
Read 2 more answers
Jacob's teacher shows his class a shaker filled with table salt. Jacob thinks that the salt in the shaker looks like a s
Elodia [21]
The answer would be c
6 0
3 years ago
The __________ system is made up of the nose, pharynx, trachea, lungs, bronchi, and alveoli. *
Reil [10]
Respiratory system is made of that
4 0
3 years ago
Read 2 more answers
What is the mass of 3.35 mol Hg(IO3)2? 1,700 g 1,840 g 1,960 g 2,110 g
vichka [17]

Answer:- 1840 g.

Solution:- We have been given with 3.35 moles of  and asked to calculate it's mass.

To convert the moles to grams we multiply the moles by the molar mass of the compound. Molar mass of the compound is the sum of atomic masses of all the atoms present in it.

molar mass of  = atomic mass of Hg + 2(atomic mass of I) + 6(atomic mass of O)

= 200.59+2(126.90)+6(16.00)

= 200.59+253.80+96.00

= 550.39 gram per mol

Let's multiply the given moles by the molar mass:

3.35mol(\frac{550.39g}{1mol})

= 1843.8 g

Since, there are three sig figs in the given moles of compound, we need to round the calculated my to three sig figs also. So, on rounding off to three sig figs the mass becomes 1840 g.



5 0
3 years ago
Other questions:
  • CHEGG Consider the following reaction: LaTeX: Fe\left(CN\right)_6^{3-}+e^-\longrightarrow Fe\left(CN\right)_6^{4-}F e ( C N ) 6
    10·1 answer
  • When reacting a solution of the following secondary hydroxyl amine with 2-butene under very high temperatures, the desired produ
    10·1 answer
  • While a match burns what type of change occurs?
    14·2 answers
  • Diego has been observing how well a type of plant grows in diffrent locations.he convludes that location with bright sunlight is
    13·1 answer
  • I need 3 facts about each and similarities plz
    10·1 answer
  • Which solution has the highest boiling point at standard pressure?
    5·1 answer
  • Construct a three-step synthesis of 1,2-epoxycyclopentane from cyclopentanol by dragging the appropriate formulas into the bins.
    8·1 answer
  • The state of water is determined solely by the conditions of _____.
    8·2 answers
  • How can a chemical reaction be sped up?
    5·2 answers
  • If you were a scientist investigating the effects of antioxidants in foods, what would you test and why?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!