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
Annette [7]
2 years ago
14

2Al(s)+Fe2O3(s) → Al2O(s)+2Fe(s) with a delta H=-847 KJ.

Chemistry
1 answer:
Scrat [10]2 years ago
5 0

∆H for given reaction -847kJ

  • As it's negative reaction is exothermic

So

2 mol of Al releases 847KJ heat

4 mol Al releases

  • 2(847)
  • 1694KJ

∆H=-1694KJ

You might be interested in
Write the chemical formula, condensed formula, and Lewis structure for each of the following hydrocarbons:
son4ous [18]

Explanation:

Here I send you all the 3 elements that you are asking for.

Notice that first on the left you will find lewis structure, then condensed and finally chemical formula of each of the compound you enlisted.

5 0
3 years ago
Acids taste<br> a. sweet. <br> c. bitter. <br> b. sour. <br> d. salty
Gnesinka [82]
The answer is (b) for example lemon juice is an acid and it tastes sour.
Hope this helps :).
4 0
3 years ago
I need help on this question
Deffense [45]
B. I’m sorry if I’m wrong ! Wasn’t sure about this question .
5 0
3 years ago
Read 2 more answers
A helium atom has --- protons &amp; --- neutrons ?
inn [45]
1 proton

(found in periodic table)

(atomic mass - atomic number = neutrons
1 - 1 = 0)

0 neutrons
5 0
3 years ago
The anion O3− does not obey the octet rule. Draw its Lewis structure and state the type of octet-rule exception. Indicate the va
Tju [1.3M]

One of the oxygen atoms in the anion O3− is hypervalent and the formal charge on this oxygen atom is -1.

Ozone is a triatomic molecule. The anion formed from ozone is called the ozonide anion. This anion is also triatomic. The resonance structures of the ozonide anion are shown in the image attached to this answer.

We can see that one of the oxygen atoms in the ozonide ion is hypervalent because it contains ten instead of eight electrons. This hypervalent oxygen atom has a formal charge of -1 while the two other oxygen atoms has a formal charge of zero.

Learn more: brainly.com/question/8646601

3 0
3 years ago
Other questions:
  • What do you think the density of a person might be? Explain
    13·1 answer
  • Evidence for evolution reveals that closely related organisms have many (blank)<br>characteristics.​
    7·2 answers
  • Determine the method to separate a mixture of ground glass and salt in order to have a pile of ground glass and another pile of
    7·1 answer
  • Which would be an example of a compound?<br> oxygen<br> carbon dioxide<br> sand<br> carbon
    10·1 answer
  • (a) Write the dissolution reaction for solid Na2CO3 below. (Use the lowest possible coefficients. Include states-of-matter under
    8·1 answer
  • Need help with this question.... Next to each Formula, write the number of atoms of each element found in one unit of the compou
    12·1 answer
  • Which of these elements could be formed at the anode when a molten salt is electrolysed?
    9·2 answers
  • Name three examples of how the atom has changed since Rutherford's discovery of the nucleus .
    5·1 answer
  • Use the equation to answer the question.
    5·2 answers
  • Write the name of the alkane next to the drawing of the molecule.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!