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
Elena-2011 [213]
2 years ago
14

Study the reactions.

Chemistry
1 answer:
yulyashka [42]2 years ago
3 0

Answer:

\displaystyle \Delta H = -2426\text{ kJ}

Explanation:

To find the enthalpy change of the target reaction, we can use Hess's Law.

Reversing the third reaction yields:

\displaystyle \text{C$_3$H$_8$(g)} \longrightarrow 3\text{C(s)} + 4\text{H$_2$(g)}\;\;\;\;\;\Delta H = -106\text{ kJ}

Multiplying the first reaction by three yields:

\displaystyle 3\text{C(s)} + 3\text{O$_2$(g)} \longrightarrow 3\text{CO$_2$}(g)}\;\;\;\;\; \Delta H = -1.18\times 10^3\text{ kJ}

Multiplying the second reaction by four yields:

\displaystyle 4\text{H$_2$(g)} + 2\text{O$_2$(g)} \longrightarrow 4\text{H$_2$O($\ell$)} \;\;\;\;\;  \Delta H = -1.14\times 10^3 \text{ kJ}

Adding all equations yield:

\displaystyle \text{C$_3$H$_8$(g)} + 5\text{O$_2$(g)} \longrightarrow 3\text{CO$_2$(g)} + 4\text{H$_2$O($\ell$)} \;\;\;\;\; \Delta H = -2426\text{ kJ}

Hence, the enthalpy change of the target reaction is -2426 kJ.

You might be interested in
The structural form of the element Ge closely resembles the structure of A. C (diamond) B. N (diatomic) C. As (tetrahedral) D. S
Ksivusya [100]

The structural form of the element Ge closely resembles the structure of C (diamond).

Diamond is composed of a lattice structure in which atoms of carbon are held together in a face centered cubic lattice.

Germanium, an element in the same group as carbon also forms a face centered cubic lattice that is very similar to that of diamond.

Hence, the  structural form of the element Ge closely resembles the structure of C (diamond).

Learn more: brainly.com/question/14578576

6 0
3 years ago
An enzyme is a catalyst used by living things to promote and regulate chemical reactions. What is the most likely enzyme for the
dem82 [27]
I’m going to guess but B?
5 0
3 years ago
Mg(s) + HCl (l) --> H2 (g) +MgCl2 (s) A student conducted an experiment with 2g of magnesium and 3 mL of 6M hydrochloric acid
alexira [117]

Answer: Do you have an image so I can solve it?

7 0
3 years ago
Mountains and valleys are some of the features found in the layer of rock at Earth's surface called the
loris [4]

Answer:

Narrow

Explanation:

Narrow

5 0
3 years ago
What is the end result <br> of diffusion?
Olenka [21]

Answer:

The End Result Of Diffusion Is An Equal Concentration, Or Equilibrium, Of Mocules On Both Sides Of The Membrane.

Explanation:

☺️ Hope It helps Ty.

3 0
2 years ago
Other questions:
  • Which of these properties would be possessed by both acids and bases? note: we do not mean mixing both in the same solution. we
    5·1 answer
  • Which statement is true about a reversible reaction?
    5·1 answer
  • How would you seperate a mixture of marbles corks and nails?
    6·2 answers
  • Which radioactive isotope is used in treating cancer?
    5·1 answer
  • What is the percentage of water to the nearest tenth in this compound? Ba(OH)2 * 8H2O
    6·1 answer
  • (Science)
    15·1 answer
  • Use the "x is small" approximation to find the concentration of the products in the following reaction which initially contains
    11·1 answer
  • Metals are used in many products because of the characteristic properties that most metals have. Which product requires the high
    14·2 answers
  • Which statement is true about water molecules?
    10·1 answer
  • The physical process of large pieces of food that are cut and crushed into smaller pieces of food is known as ___________ digest
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!