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
KATRIN_1 [288]
3 years ago
7

Octane C8H18 is an ingredient in gasoline. How many carbon atoms are in 20 kg of octane? help please

Chemistry
2 answers:
abruzzese [7]3 years ago
4 0

Answer:

Explanation:

Octane is C8H18, carbon is C. Therefore, for every mol of C8H18 there will be 8 mols of carbon.

Convert 20 kg of octane to mols octane using molar mass of octane.

Molar Mass octane = (8*12.011)+(18*1.008)=114.23 g/mol, where 8 and 18 are the atoms in the molecule and 12.011 and 1.008 are the respective molar masses of carbon and hydrogen.

20kg C8H18 *1000g/kg * mol C8H18/114.23g C8H18 = 175.1 mols octane.

Now convert that number of mols to mols carbon:

175.1 mol C8H18 * (8 mol C/mol C8H18)=1400.8 mol C.

Now remember that a mol of any given atom=6.022*10^23 atoms.

So 1400.8 mol C=1400.8*(6.022*10^23) atoms C, which is equal to your final answer, 8.4*10^26 atoms. (round to 2 significant digits since the initial number given, 20, has 2 significant digits.)

The main thing you want to look for here is your conversion factors. Once you have those down it is simple algebra from there, so be sure to practice those!

eduard3 years ago
3 0

Answer:

Octane is a hydrocarbon and an alkane with the chemical formula C 8 H 18, and the condensed structural formula CH 3 (CH 2) 6 CH 3.Octane has many structural isomers that differ by the amount and location of branching in the carbon chain. One of these isomers, 2,2,4-trimethylpentane (commonly called iso-octane) is used as one of the standard values in the octane rating scale.

Chemical formula: C₈H₁₈

Molar mass: 114.232 g·mol−1

Melting point: −57.1 to −56.6 °C; −70.9 to −69.8 °F; 216.0 to 216.6 K

Solubility in water: 0.007 mg dm−3 (at 20 °C)

You might be interested in
6. Positive uses of radioactive decay used by humans would not include
spin [16.1K]

Answer:

D

Explanation:

All are good

7 0
3 years ago
For each of the salts on the left, match the salts on the right that can be compared directly, using Ksp values, to estimate sol
tigry1 [53]

Answer:

1.AD

2.BC

Explanation:

For aluminum phosphate AlPO4 (s) <------> Al^3+(aq) + PO4^3-(aq)

Ksp= [Al^3+] [PO4^3-]

For magnesium hydroxide

Mg(OH)2(s) <--------> Mg^2+(aq) +. 2OH^-(aq)

Ksp= [Mg2+] [2OH^-]^2

For

7 0
3 years ago
What does the chemical formula CaCI2 show about the compound or represents?
atroni [7]

Answer:

Two elements because Can is one element and Cl is another. The two is a coeficient that states how many of that element there is.

I hope this helps you!!!

8 0
3 years ago
An unknown solution has a pH of 2. How would you classify this solution?
devlian [24]
Acidic because anything over a ph of 7 would be basic but anything below 7 would be acid and if it has a ph of 7 it would be neutral....Hope I helped
7 0
3 years ago
How many atoms of carbon are in the sample
Serhud [2]
There are six atoms in the carbon
6 0
3 years ago
Other questions:
  • What term describes the ability of something to float on water
    6·2 answers
  • Cyanobacteria______.a.can fix nitrogen, thus causing many freshwater ecosystems to be limited by phosphorus availability.b.can m
    15·1 answer
  • What is the mole ratio of water to H3PO4?
    9·1 answer
  • What does nm measure in the spectra?
    13·2 answers
  • To find density of an object what 2 things are needed?
    8·1 answer
  • . A mixture of methane and air is capable of being ignited only if the mole percent of methane is between 5% and 15%. A mixture
    13·1 answer
  • When glaciers are growing larger, the concentration of the heavier oxygen isotope in sea water increases?
    13·2 answers
  • How many significant figures are in 8.00 (10)-3
    8·1 answer
  • How does an ecosystem benefit when leaves fall from a tree and decompose on the soil?
    11·2 answers
  • Which of the following could be classified as unleavened bread?
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!