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
kobusy [5.1K]
3 years ago
14

Ethanol (c2h5oh) burns according to the equation c2h5oh(l) + 3o2(g) â 2co2(g) + 3h2o(l), δh= -1367 kj/mol. how much heat is rel

eased when 35.0 g of ethanol is burned?
Chemistry
1 answer:
Eva8 [605]3 years ago
6 0
Molar mass of ethanol is: 46 grams/moles
C2H6O-> 2x12 + 6x1+ 16x1      (see periodic table)

If 46 g correspond to 1 mol, how much moles correspond 35 g?
46g ====1mol
35g====x
x= 35/46
x=0,76 mol

-1367 kj/mol, means that there are -1367 kj in one mol
1mol     ==== -1367 kj
0,76mol====  x
x=- 1040Kj


Ethanol released 1040 Kj.




You might be interested in
How do I balance this equation? ?KNO3 → ?K2O + ?N2(g)+ ?O2(g) and what type of reaction is it?
nirvana33 [79]

Answer:

4KNO3 ==> 2K2O + 2N2 + 5O2

Explanation:

It's a decomposition, but not a simple one.

KNO3 ==> K2O + N2 + O2   I don't usually do this, but I think the easiest way to proceed is to  balancing the K and N together. That will require a 2 in front of KNO3

4KNO3 ==> 2K2O + 2N2 + 5O2

Now you have (3*4) = 12 oxygens. Two are on the K2O. So the other 10 must be on the O2

That should do it.

3 0
3 years ago
What is the formula for diarsenic pentoxide
Andru [333]
The answer is As2O5


good luck
7 0
3 years ago
If a sound wave speeds up and its frequency does not change, what happens to the wavelength?
yan [13]

Answer: No, the speed of propagation is constant in a given medium; only the wavelength changes as the frequency changes.

Explanation:

5 0
2 years ago
How many distinct dichlorination products can result when isobutane is subjected to free radical chlorination?
Elenna [48]

Answer:

c. 3

Explanation:

Dicholorination of tertiary alkane ( i.e. isobutane) is a halogenation reaction which makes it possible to replace the alkyl functional group with halogenated chlorine.

When Isobutane is subjected to free radicals chlorination, three distinct dichlorination can be formed.

The mechanism of the formation of these products can be seen in the image attached below.

4 0
4 years ago
Determine which categorization is most appropriate for mud
Dmitry [639]
Flat character -we don’t know much about mud other that it’s describing it doesn’t have feelings it doesn’t develop
6 0
4 years ago
Read 2 more answers
Other questions:
  • Write a balanced half-reaction for the reduction of gaseous nitrogen (N2) to aqueous hydrazine (N2H4) in basic aqueous solution.
    9·1 answer
  • Which colors have the highest energy and the least energy
    15·1 answer
  • How does a sedimentary rock turn into a metamorphic rock?
    12·1 answer
  • Calculate the hydroxide ion concentration in an aqueous solution with a poh of 9.85 at 25°c.
    8·2 answers
  • Please a little help in this I will really appreciate it
    8·1 answer
  • Anything that has mass and volume is made out of atoms.
    6·1 answer
  • Determining the molecular formula of a hydrocarbon with a relative molecular mass of 54​
    15·1 answer
  • A sample of CO2 has a volume of 6.08 cm3 at 2.0 atm. At what pressure would this sample of gas have a volume of 42.0 cm?
    12·1 answer
  • Số oxi hóa của các nguyên tố: Fe(OH)2; Fe(OH)3; FexOy; Zn(OH)2 là gì
    12·1 answer
  • The image above shows a chamber with a fixed volume
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!