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
horsena [70]
3 years ago
12

The combustion of 5.00 grams of c2h6(g), at constant pressure releases 259 kj of heat. what is δh for the reaction: 2c2h6(g) + 7

o2(g) => 4co2(g) + 6h2o(l)?
Chemistry
1 answer:
Vlad1618 [11]3 years ago
7 0

The molar mass of C2H6 is 28 g/mol, so the number of moles is:

moles C2H6 = 5 / 28 = 0.179 mol

 

From the equation, there are 2 moles of C2H6, therefore the heat of reaction is:

δh = (259 kj / 0.179 mol) * 2 mol

<span>δh = 2900 kJ = 2.9 MJ</span>

You might be interested in
A chef fills a 50ml container with 43.5g of cooking oil. whats the density of the oil
jasenka [17]
I believe the answer is .87g/mL. But I'm not sure so whatevs
4 0
3 years ago
Which metal will react spontaneously with Cu2+ (aq) at 25°C?
Gwar [14]

Answer:

Mg  

Explanation:

The standard reduction potentials are

                                              <u>E°/V </u>

Au³⁺(aq ) + 3e⁻  ⟶  Au(s);     1.42

Hg²⁺(aq)  + 2e⁻  ⟶  Hg(l);     0.85

Ag⁺(aq)    +   e⁻  ⟶  Ag(s);    0.80

Cu²⁺(aq)   + 2e⁻ ⟶  Cu(s);   0.34

Mg2+(aq) + 2e- ⟶  Mg(s);   -2.38

The more negative the standard reduction potential, the stronger the metal is as a reducing agent.

Mg is the only metal with a standard reduction potential lower than that of Cu, so

Only Mg will react spontaneously with Cu²⁺.

 

5 0
3 years ago
Read 2 more answers
Which of the following is not the unit of speed?
vitfil [10]

Answer:

d and c

Explanation:

that is just the answer

7 0
2 years ago
Read 2 more answers
According to the ideal gas law, increasing the volume of a closed reaction container decreases the thermal energy because the
hichkok12 [17]

Answer:

b is ur answer the temputer does increase

Explanation:

8 0
3 years ago
Scientists' belief that an atom is a solid sphere, is good enough to explain; PLZ I HAVE LESS TIME!!!!
Natasha2012 [34]

Answer:

Its quite vague, instead you could say an atom is the smallest building block which further consists of subatomic particles like protons, neutrons and electrons :)

Hope thi helps :) and I'd appreciate if you'd mark brainliest because ive been stuck on the same rank for quite a long time :(

7 0
3 years ago
Other questions:
  • Match the each term with its definition. 1) reaction coordinate a) the higher point on the energy curve 2) δg° b) the plot of th
    11·1 answer
  • Two atoms that are isotopes of one another must have the same number of what? Electrons, All Particles, Protons, or Neutrons
    11·2 answers
  • Why does hydrochloric acid have a higher boiling point than diatomic fluorine? The stabilizing effect of dipole interactions in
    14·2 answers
  • Why is the deuterium-tritium reaction the most promising nuclear fusion reaction for future energy production?
    13·2 answers
  • I NEED HELP PLEASE !!!!!
    14·2 answers
  • 24. A hypothesis cannot be considered a
    5·2 answers
  • Write the separation scheme for the isolation of triphenylmethanol from the reaction mixture once the reaction is complete. The
    12·1 answer
  • I need help on this right now it is due it 12mins please help!!!
    11·1 answer
  • How are you able to light a bunsen burner​
    10·1 answer
  • C.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!