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
algol13
3 years ago
7

Consider the following thermochemical reaction for kerosene:

Chemistry
2 answers:
ch4aika [34]3 years ago
7 0

We have to solve this question using the stoichiometry of the reaction:

The equation of the reaction is;

2 C12H26(l) + 37 O2(g) -----> 24 CO2(g) + 26 H2O(l) + 15,026 kJ

According to the question;

Number of moles of CO2 released = 21.3 g/44 g/mol = 0.48 moles

From the  stoichiometry of the reaction:

Since;

24 moles of CO2 released 15,026 KJ

0.48 moles of CO2 will release 0.48 * 15,026/24

= 301 KJ of heat.

brainly.com/question/6901180

julsineya [31]3 years ago
3 0

Answer:

2 C12H26(l) + 37 O2(g) ----- > 24 CO2(g) + 26 H2O(l) + 15,026 kJ2C12H26(l)+37O2(g)−−−−−>24CO2(g)+26H2O(l)+15,026kJ

According to the question;

Number of moles of CO2 released = 21.3 g/44 g/mol = 0.48 moles

Since;

24 moles of CO2 released 15,026 KJ

0.48 moles of CO2 will release 0.48 * 15,026/24

= 301 KJ of heat.

You might be interested in
PLZ ANSWER
satela [25.4K]

Answer:

B. The student should model a convex lens because it directs light toward the center of the lens.

Explanation:

Lenses are optical devices that work on the principle of refraction.

Refraction is a phenomenon of wave (such as light waves) that occurs when a ray of light crosses the interface between two mediums with different optical density: when this occurs, the ray of light bends and change speed.

In particular, there are two types of lenses:

  • Convex lenses: these lenses are curved outward at their center, therefore the rays of light coming from infinite distance (parallel to the axis) are all focused into a point of the lens, called principal focus. Therefore, a convex lens directs lights towards this point.
  • Concave lenses: these lenses are curved inward at their center, therefore the rays of light coming from infinite distance are bent away from the principal focus. Therefore, this is a diverging lens, as the rays of light do not converge.

So, the correct answer is

B. The student should model a convex lens because it directs light toward the center of the lens.

7 0
3 years ago
What are some benefits of eating apples??
Lisa [10]
Apples are rich in fiber and antioxidants. Eating them is linked to a lower risk of many chronic conditions, including diabetes, heart disease, and cancer. Apples may also promote weight loss and improve gut and brain health.
5 0
2 years ago
Read 2 more answers
When a police officer uses radar for speed control, the officer is using what kind of eletromagnetic waves?
Elenna [48]
It uses radio waves.

3 0
4 years ago
Read 2 more answers
Biochemistry is the study of the proceses that take place in...
weeeeeb [17]

Answer:

Living organisms/chemical processes that support life

5 0
3 years ago
is 0.0410 M−1 s −1 . We start with 0.105 mol C2F4 in a 4.00-liter container, with no C4F8 initially present. What will be the co
Jet001 [13]

Answer:

After three hours, concentration of C₂F₄ is 0.00208M

Explanation:

The rate constant of the reaction:

2 C2F4 → C4F8 is 0.0410M⁻¹s⁻¹

As the units are M⁻¹s⁻¹, this reaction is of second order. The integrated law of a second-order reaction is:

\frac{1}{[A]} =\frac{1}{[A]_0} +Kt

<em>Where [A] and [A]₀ represents initial and final concentrations of the reactant (C₂F₄), K is rate constant (0.0410M⁻¹s⁻¹) and t is time of the reaction (In seconds). </em>

3.00 hours are in seconds:

3 hours ₓ (3600 seconds / 1 hour) = 10800 seconds

Initial concentration of C2F4 is:

0.105mol / 4.00L = 0.02625M

 

Replacing in the integrated law:

\frac{1}{[A]_0}= \frac{1}{0.02625}  +0.0410M^{-1}s^{-1}*10800s\\\frac{1}{[A]_0}=480.9M^{-1}

[A] = 0.00208M

<h3>After three hours, concentration of C₂F₄ is 0.00208M</h3>
5 0
3 years ago
Other questions:
  • They saw that the rock was deep purple. A quantitative B qualitative
    14·2 answers
  • Repeating units in an organic compound are called
    7·2 answers
  • Is graphite brittle???
    7·1 answer
  • Molarity how can the concentration of a solution be expressed quantitatively answer key
    15·1 answer
  • Humans could try to pollinate food crops by hand, but this would be expensive and time consuming. Natural pollinators, like bees
    7·1 answer
  • Why isn't a different base broth required for each decarboxylase test?
    15·1 answer
  • What does nature favor in terms of entropy and enthalpy. Explain.
    11·1 answer
  • Sodium sulphate reacts with calcium nitrate to produce sodium nitrate and calcium sulphate. A) identify the reactants and produc
    9·1 answer
  • 3. An object's kinetic energy remains constant as long as:
    8·2 answers
  • All atoms of the same element have the same what?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!