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
cricket20 [7]
2 years ago
5

C3H8+3O2 = 3CO2+4H2O what is the enthalpy combustion please show work

Chemistry
1 answer:
irakobra [83]2 years ago
5 0

Answer:

\Delta H_{comb}=2043.85kJ/mol

Explanation:

Hello there!

In this case, according to the given chemical reaction, it possible for us to set up the expression for the calculation of the enthalpy change as shown below:

\Delta H_r=-\Delta H_{comb}=3\Delta _fH_{CO_2}+4\Delta _fH_{H_2O}-\Delta _fH_{C_3H_8}-3\Delta _fH_{O_2}

Thus, given the values of the enthalpies of formation on the attached file, we obtain:-\Delta H_{comb}=3(-393.5kJ/mol)+4(-241.8kJ/mol)-(-103.85kJ/mol)-3(0kJ/mol)\\\\-\Delta H_{comb}=-2043.85kJ/mol\\\\\Delta H_{comb}=2043.85kJ/mol

Best regards!

You might be interested in
PLZ HELP!<br><br> How do you think changing the angle of a ramp will affect work done?
kogti [31]

Answer: The steepness of a ramp affects it by making it easier or harder.

Explanation: It's a bit situational. If you were going up a steep ramp with a heavy load, it will increase the work necessary, whereas if you were going down a ramp, it would decrease the work necessary. If you need this simply put, think about biking up and down a hill. It would be easier going down than up.

6 0
2 years ago
A chemical reaction produces 138 mol of HBr gas. What volume will that gas occupy at STP?
stepan [7]

Answer:

The second one

Explanation:

5 0
2 years ago
Read 2 more answers
All atoms of the same element have the same:
Korvikt [17]
They have the same number of protons
8 0
2 years ago
Read 2 more answers
In a particular redox reaction, Cr is oxidized to CrO42– and Cu2 is reduced to Cu . Complete and balance the equation for this r
Alisiya [41]
<span> Cr + Cu2+ = CrO42- + Cu+

</span>
8 0
3 years ago
Why is the earths Axis titled
Pachacha [2.7K]
Since obliquity is the angle between the axis of rotation and the direction perpendicular to the orbital plane, it changes as the orbital plane changes due to the influence of other planets. But the axis of rotation can also move (axial precession), due to torque exerted by the sun on a planet's equatorial bulge.
(Got it from google )
7 0
3 years ago
Other questions:
  • In an experiment, what is the purpose of the control group?
    7·2 answers
  • I’m confused on this concept please help asap!
    11·1 answer
  • How many moles of aluminum metal are needed to produce 3.33 moles of aluminum chloride?
    12·1 answer
  • Choose the appropriate volumetric device to use for each of the volume measuring applications.
    13·1 answer
  • PLEASE HELP ME ASAP!!! ILL GIVE BRAINLIEST ITS PLATO!!!
    5·2 answers
  • Question 8 of 50
    7·2 answers
  • Disorder of the particles of a liquid decreases the freezing point. True or false
    6·1 answer
  • Dichloroethane, a compound that is often used for dry cleaning, contains carbon, hydrogen, and chlorine. It has a molar mass of
    15·1 answer
  • Help please it’s due in 3 minutes
    6·1 answer
  • How does gravity affect the rain during a rainstorm?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!