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
jekas [21]
2 years ago
6

state the equation for the formation of ethane from its elements and ghen detwrmine the value for the standard enthalpy of forma

tion of ethane
Chemistry
1 answer:
RideAnS [48]2 years ago
3 0

The standard enthalpy of formation of ethane is determined as -192.5 kJ/mol.

<h3>Reaction for the formation of ethane</h3>

The reaction for the formation of ethane is given as;

2C + 3H₂ → C₂H₆

Where;

  • C is carbon (graphite)
  • H is hydrogen
  • C₂H₆ is ethane
<h3>Standard enthalpy of formation of ethane</h3>

The standard enthalpy of formation of ethane is calculated as follows;

ΔH = ΔH₁ + ΔH₂  + ΔH₃

where;

  • ΔH₁ is heat of formation of graphite = -286 kJ/mol
  • ΔH₂ is heat of formation of hydrogen = -393.5 kJ/mol
  • ΔH₃ is heat of formation of ethane = 1560 kJ/mol

2C + 3H₂ → C₂H₆

ΔH = 2(-286) + 3(-393.5) + 1(1560)

ΔH = -572 - 1180.5 + 1560

ΔH = -192.5 kJ/mol

Learn more about standard enthalpy here: brainly.com/question/14047927

#SPJ1

You might be interested in
This gas law takes into consideration temperature and pressure
grandymaker [24]

Answer:

A. charles law

5 0
3 years ago
Read 2 more answers
1) In what ways do the fossil types change as you get deeper in the fossil record?
rodikova [14]
<h2>What are fossils?</h2>

Fossils are the remains or impression of plants or animal embedded in rock. They are the remains of dead animals and plants that once lived on this earth in the remote past. Fossils are formed when dead organisms are not completely decomposed.

<h3>2. Fossil record</h3>

The fossil records are referred to as the totality of fossils. It helps paleontologists, archaeologists, and geologists place important events and species in the appropriate geologic era. Fossil records can be used to show that organisms changed to meet new conditions

<h3>3. The grand staircase</h3>

The Grand Staircase is referred to as a sequence of sedimentary rock layers that stretch south for 100 miles from Bryce Canyon National Park through Zion National Park and into the Grand Canyon.

The different environmental conditions the Grand Staircase exposed to over this +1 Billion year is heat

4. Based on the Law of Superposition which states that in undisturbed rock sequences the bottom layers are older than the top layers.

Learn more about fossils:

brainly.com/question/2977553

4 0
3 years ago
Liability that arises from not maintaining a building is referred to as a) medical foundation liability. b) premises liability.
Paul [167]

Answer:

opt. B

Explanation:

4 0
3 years ago
Convert 86,000 cm into km
ddd [48]
.86km is the correct answer
3 0
4 years ago
Read 2 more answers
A sample of copper absorbs 4.31E+1 kJ of heat, resulting in a temperature rise of 6.71E+1 °C. Determine the mass (in kg) of the
olga2289 [7]

Answer: 1.67 kg

Explanation:

The quantity of heat required to raise the temperature of a substance by one degree Celsius is called the specific heat capacity.

Q=m\times c\times \Delta T

Q = Heat absorbed=4.31\times 10^1kJ = 43100J   (1kJ=1000J)

m= mass of substance = ?

c = specific heat capacity = 0.385J/g^0C

Change in temperature ,\Delta T=T_f-T_i=6.71\times 10^1^0C=67.1^0C

Putting in the values, we get:

43100J=m\times 0.385J/g^0C\times 67.1^0C

m=1670g=1.67kg   (1kg=1000g)

Thus the mass (in kg) of the copper sample is 1.67

3 0
3 years ago
Other questions:
  • In the reaction ______ H2 + N2 ----&gt; 2 NH3, what coefficient should be placed in front of H2 to balance the reaction?
    7·2 answers
  • 14 POINTS
    10·2 answers
  • How is each of the lizards adapted to its environment?
    13·1 answer
  • If a temperature increase from 12.0 ∘c to 22.0 ∘c doubles the rate constant for a reaction, what is the value of the activation
    5·1 answer
  • Which element has a larger atomic radius than sulfur?
    8·1 answer
  • How many shells does Potassium (K) have?​
    9·2 answers
  • The complete combustion of acetylene, C2H2(g), produces 1300. kJ of energy per mole of acetylene consumed. How many grams of ace
    8·1 answer
  • How do you create Magnesium Sulfide? Write the chemical formula as well​
    14·1 answer
  • Use the periodic to write the electron configuration for rubidium (Rb) in noble-gas notation. . Rb: [Kr]s
    12·2 answers
  • If the atoms that share electrons have an unequal attraction for the electrons, the bond is called
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!