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
Sloan [31]
3 years ago
9

When C2H6(g) reacts with O2(g) according to the following reaction, 1.43×103 kJ of energy are evolved for each mole of C2H6(g) t

hat reacts. Complete the following thermochemical equation.
2C2H6(g) + 7O2(g)---------->4CO2(g) + 6H2O(g) DeltaH = _____kJ
Chemistry
1 answer:
dezoksy [38]3 years ago
8 0

Answer:

-2.86x10³ kJ

Explanation:

The enthalpy of a reaction (ΔH) is defined as the heat produced or consumed by a reaction. In the reaction:

2 C₂H₆(g) + 7 O₂(g) → 4 CO₂(g) + 6 H₂O(g)

The ΔH is the heat envolved in the reaction per 2 moles of C₂H₆. 1.43x10³ kJ are involved when 1 mole reacts. Thus, when 2 moles react, involved heat is:

1.43x10³ kJ ₓ 2 = <em>2.86x10³ kJ</em>. As the reaction is a combustion reaction (Produce CO₂ and H₂O), the heat involved in the reaction is <em>PRODUCED, </em>that means ΔH is negative, <em>-2.86x10³ kJ</em>

You might be interested in
Which of the following is a renewable resource a. copper b. aluminum c. peanut oil d. natural gas​
aliya0001 [1]

Answer: c. peanut oil

Explanation:

8 0
2 years ago
Read 2 more answers
Let's just say I want to get my mixture to a certain pH but I add too much water to my solution. Can I just add the same volume
Dafna11 [192]

Answer:

You can

Explanation:

The concentration doesn't change when its equals out.

4 0
3 years ago
Based on the solubility chart, which of the listed salts is the most soluble at 25 degrees Celsius?
VashaNatasha [74]
I think it's Potassium iodide because it has the highest solubility at 25°C.
4 0
3 years ago
Read 2 more answers
The product of alpha decay of the Nobelium isotope 259No is
Svet_ta [14]

Answer:

Nobelium is made by the bombardment of curium (Cm) with carbon nuclei. Its most stable isotope, 259No, has a half-life of 58 minutes and decays to Fermium (255Fm) through alpha decay or to Mendelevium (259Md) through electron capture.

Explanation:

7 0
3 years ago
Hydrogen gas has a density of 0.090 g/L, and at normal pressure and -1.72 C one mole of it takes up 22.4 L. How would you calcul
BlackZzzverrR [31]

Answer:

n= \frac{m}{ \rho }* \frac{1 mol}{22.4 L}

Explanation:

Assuming that all caculations are at normal pressure and -1.72°C :

n= \frac{m}{ \rho }* \frac{1 mol}{22.4 L}

Where

n is the number of moles of hydrogen

n is the mass of hydrogen

\rho is the density of hydrogen

6 0
3 years ago
Read 2 more answers
Other questions:
  • Describe the atoms of the gas neon
    14·2 answers
  • In the Alkali metals what element is the same "Period" as the element Neon
    10·1 answer
  • The density of acetonitrile (CH3CN) is 0.786 g/mL and the density of methanol (CH3OH) is 0.791 g/mL. A solution is made by disso
    10·1 answer
  • Which of the following best describes an atom? * the smallest unit of living things only the smallest unit of an element the sma
    5·1 answer
  • URGENT HELP NEEDED! PLEASE ANSWER WITH EXPLANATION*
    13·1 answer
  • 21. For each of the following precipitation reactions,
    10·1 answer
  • True or false: Some parasites have complex life cycles where they live in different species of hosts at different stages
    9·2 answers
  • Shows the types and amounts of atoms that form an ionic bond
    8·1 answer
  • What is the mass of 2.486 * 10^{24} atoms of neon?
    9·1 answer
  • Classer les particules suivantes par ordre chronologique d’apparition dans l’Univers: atome d’hydrogène–proton–noyau d’hydrogène
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!