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
Nadya [2.5K]
3 years ago
10

The combustion of propane is represented by the following chemical equation. C3H8(g)+5O2(g)⟶3CO2(g)+4H2O(l) The standard enthalp

ies of formation ( ΔH∘f ) for C3H8(g), CO2(g), and H2O(l) are −103.8 kJ/mol, −393.5 kJ/mol, and −285.8 kJ/mol respectively. What is the enthalpy of combustion for propane at 25 °C and 1 atm?
Chemistry
1 answer:
wariber [46]3 years ago
7 0

Answer:

ΔH°c = -2219.9 kJ

Explanation:

Let's consider the combustion of propane.

C₃H₈(g) + 5 O₂(g) ⟶ 3 CO₂(g) + 4 H₂O(l)

We can find the standard enthalpy of the combustion (ΔH°c) using the following expression.

ΔH°c = [3 mol × ΔH°f(CO₂(g)) + 4 mol × ΔH°f(H₂O(l))] - [1 mol × ΔH°f(C₃H₈(g)) + 5 mol × ΔH°f(O₂(g))]

ΔH°c = [3 mol × (-393.5 kJ/mol) + 4 mol × (-285.8 kJ/mol)] - [1 mol × (-103.8 kJ/mol) + 5 mol × (0 kJ/mol)]

ΔH°c = -2219.9 kJ

You might be interested in
When a compound is oxidized it ______ one or more electrons; whereas when a compound is reduced it _____ one or more electrons?
MatroZZZ [7]
Oxidation:-  it loses electrons

Reduction:-  it gains electrons
7 0
3 years ago
Read 2 more answers
Which clouds are often associated with thunder and lightning?
FrozenT [24]
Cumulonimbus clouds, of course!. These clouds are known to carry rain, hail, and thunder. Bigger versions are known as supercells, deadly storms that can spew out tons of rain, hail, wind, and even tornadoes!
6 0
3 years ago
Read 2 more answers
How to make 100 ml of 0.001 mM solution with 0.0405mM solution?
alexgriva [62]

Answer:

Measure 2.47 mL of the stock solution (i.e 0.0405 mM) and dilute it to the 100 mL mark with water

Explanation:

To make 100 mL of 0.001 mM solution from 0.0405mM solution, we need to determine the volume of 0.0405mM solution needed. This can be obtained as follow:

Molarity of stock (M₁) = 0.0405 mM

Volume of diluted (V₂) = 100 mL

Molarity of diluted solution (M₂) = 0.001 mM

Volume of stock solution needed (V₁) =?

M₁V₁ = M₂V₂

0.0405 × V₁ = 0.001 × 100

0.0405 × V₁ = 0.1

Divide both side by 0.0405

V₁ = 0.1 / 0.0405

V₁ = 2.47 mL

Therefore, to make 100 mL of 0.001 mM solution from 0.0405mM solution, measure 2.47 mL of the stock solution (i.e 0.0405 mM) and dilute it to the 100 mL mark with water.

3 0
3 years ago
Predict whether the bond between each pair of atoms will be no polar convalent, polar covalent or ionic
bekas [8.4K]
Yes sir I’m not sure why what I said so yes sir I’m not gonna go to the bathroom I’m just gonna go home I’m gonna be there in about a week or two I don’t uueiueyey
7 0
3 years ago
A balloon is inflated with 1.25 L of helium at a temperature of 298K. What is
Monica [59]

Answer:

What is

the volume of the balloon when the temperature is 310K?

7 0
3 years ago
Other questions:
  • Which of the following would naturally form a cation?<br> Ne<br><br> Li<br><br> O<br><br> I
    6·1 answer
  • What dissolved species are present in a solution of NaClO4?
    12·1 answer
  • A nuclear waste site. cesium-137 is a particularly dangerous by-product of nuclear reactors. it has a half-life of 30 years. it
    10·1 answer
  • What is produced during the replacement reaction if Ba(NO3)2 and Na2SO4?
    9·1 answer
  • A solid with a density of 3.57g/mL and mass of 19.5g is added to a graduated cylinder that contain 23.2mL of water. What is the
    11·1 answer
  • Which features do sound waves have that ocean and light waves do not? Check all that apply.
    10·2 answers
  • What is the mass of an element with 5 protons, 5 neutrons, 5 electrons?
    6·2 answers
  • Roasting a marshmallow IN the fire is an example of what type of heat transfer
    5·1 answer
  • Chose the molecular formula that represents an organic molecule.
    13·1 answer
  • What might happen if an endocrine hormone such as thyroid hormone was controlled by positive instead of negative feedback?​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!