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
chubhunter [2.5K]
3 years ago
10

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

Chemistry
1 answer:
dezoksy [38]3 years ago
8 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
Help me with these two please​
prohojiy [21]

Answer:

13.A

14.B?

on 14 i don't know

Explanation:

3 0
3 years ago
Read 2 more answers
The dipole moment of the water molecule (H2O) is 6.17x10^-30 C.m. Consider a water molecule located at the origin whose dipole m
valkas [14]

Answer:

There are other details missing in the question. i.e Assume that x is much larger than the separation d between the charges in the dipole, so that the approximate expression for the electric field along the dipole axis E = p/2πε0y3 can be used, where p is the dipole moment, and y is the distance between ions. A) What is magnitude______N B) Direction? +x-direction or -x-direction C) Is this force attractive or repulsive?

A) Magnitude of electric force = 6.576 x 10 raised to power -13 N

B) Since the force direction is always dependent on the electric field and electric field = F/q, since the chlorine has a negative charge as such the direction of the electric force will be in the X - direction

C) Since the charges are of different nature, as such the force between them will be ATTRACTIVE.

Explanation:

The detailed steps is shown in the attachment

8 0
3 years ago
Which shell are the valence electrons of a germanium atom in the ground state located
yKpoI14uk [10]
It would be in the fourth shell.
7 0
3 years ago
Write the name and formula of the compound made of magnesium and fluorine
Alexxx [7]

Answer:

Name : Magnesium Fluoride

Formula : MgF2

Explanation:

Give me brainliest

8 0
3 years ago
Can someone help me with this pls
diamong [38]
The chemical elements are arranged in order of increasing atomic number. Answer A.
7 0
3 years ago
Read 2 more answers
Other questions:
  • Write a sentence using the following word: beech.
    12·2 answers
  • Titration Lab Sheet: Day 2 (Alternate)‼️‼️‼️
    8·2 answers
  • Element X
    7·1 answer
  • How many milliliters of 0.100 M Ba(OH)2 are required to neutralize 20.0 mL of 0.250 M HCl?
    15·2 answers
  • Determine the concentration of sulfuric acid that needed 47 mL of 0.39M potassium hydroxide solution to neutralize a 25 mL sampl
    11·1 answer
  • Sodium chloride reacts with 0.10 moles of aluminum nitrate in water soultion. How many grams of sodium chloride are required?
    6·1 answer
  • I need help please, will mark you the brainliest.
    15·1 answer
  • How many moles are there in 1.68 * 10 ^ 24 molecules of nitrogen dioxide?
    9·1 answer
  • Atoms and ions are held together by..
    5·1 answer
  • True or false Carbohydrates and proteins have the same caloric value per gram
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!