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
lana66690 [7]
3 years ago
7

What mass of octane must be burned in order to liberate 5270 kj of heat? δhcomb = -5471 kj/mol?

Chemistry
1 answer:
katrin2010 [14]3 years ago
6 0
As,
                           5471 kJ heat is given by  =  1 mole of Octane
Then,
                    5310 kJ heat will be given by  = X moles of Octane

Solving for X,
                                  X  =  (5310 kJ × 1 mol) ÷ 5471 kJ

                                  X  =  0.970 moles of Ocatne

So, 0.970 moles of Octane will liberate 5310 kJ energy. Now changing moles to mass,
As,
                                  Moles  =  mass / M.mass
Or,
                                  Mass  =  Moles × M.mass
Putting values,
                                  Mass  =  0.970 mol × 114.23 g/mol

                                  Mass  =  110.83 g of Octane
You might be interested in
Plants use sunlight from the atmosphere during the process of
Nastasia [14]

Answer:

photosynthesis

Explanation:

6 0
3 years ago
Read 2 more answers
Regarding the formula al2o3 which of the following is accurate
user100 [1]
You forgot to post 'the following' .
8 0
3 years ago
Characteristics of an atom
Doss [256]

Answer:

It is composed of protons, which have a positive charge, and neutrons, which have no charge. Protons, neutrons, and the electrons surrounding them are long-lived particles present in all ordinary, naturally occurring atoms. Other subatomic particles may be found in association with these three types of particles.

Explanation:

Atoms consist of three basic particles: protons, electrons, and neutrons. The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged).

3 0
3 years ago
Draw the intermediate (in the first box) that forms in the reaction of 1-methylcyclopentene with br2 in ccl4, then draw the expe
svetlana [45]

Answer:

The product of the reaction is 1,2 di-bromo-1-methylcyclopentane.

Explanation:

7 0
3 years ago
What is one service humans receive from the environment AND one-way humans disrupt ecosystems? (These need to be related!)
Mashcka [7]

Answer:

Land-use change: Humans may destroy natural landscapes as they mine resources and urbanize areas. This is detrimental, as it displaces residing species, reducing available habitats and food sources. ... This can negatively effect an ecosystem because the introduced species may outcompete native organisms and displace them.

Explanation:

5 0
3 years ago
Other questions:
  • Summarize the rules for the allowable values of the four quantum numbers of an electron in an atom.
    13·1 answer
  • Find the momentum of a 120 g snowball that is rolling with a velocity of 8.9 m/s. Express your answer in two significant figures
    13·1 answer
  • I need help on this question
    15·1 answer
  • What is the mass of 2.40 moles of magnesium chloride, mgcl2
    11·1 answer
  • 1) Chemical analysis of a gaseous compound show its composition to be 36.4% carbon, 57.5% fluorine, and 6.1%
    10·1 answer
  • Chemistry and physics are a branch of what science?
    13·1 answer
  • How many hydrogen are in 4.02 grams in water​
    9·2 answers
  • One's motivation can lead people to interpret the same situation differently.
    12·2 answers
  • El siguiente bloque de masa 2 kg acelera a razón<br>de 4 m/s, calcula el módulo de la fuerza F​
    10·1 answer
  • Write the molecular, ionic, and net ionic equations for the reaction of Sr(NO3)2(aq) and Li2SO4(aq).
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!