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
WITCHER [35]
2 years ago
12

Complete combustion of 7.60 g of a hydrocarbon produced 23.4 g of CO2 and 10.8 g of H2O. What is the empirical formula for the h

ydrocarbon?
Chemistry
1 answer:
romanna [79]2 years ago
4 0

Mass of hydrocarbon = 7.60 g

All the C gets converted to 23.4 g of CO2

All the H gets converted to 10.8 g of H2O

Now:

Molecular mass of CO2 = 48 g/mol

Molecular mass of H2O = 18 g/mol

# moles of CO2 = 23.4 g/48 gmol-1 = 0.4875  = moles of C

# moles of H2O = 10.8/18 = 0.6 moles = moles of H

Now:

Mass of C = 0.4875 moles * 12 g/mole = 5.85 g

Mass of H = 0.6 moles * 1 g/mole = 0.6 g

Total mass = C + H = 5.85 + 0.6 = 6.45 g. Ideally, this must be equal to the given  mass of the hydrocarbon, 7.60 g.

Nevertheless, in order to find the empirical formula, divide the # moles of C and H by the smallest value:

C = 0.4875/0.4875 = 1

H = 0.6/0.4875 = 1.23 (approximately = 1)

Empirical formula = CH



You might be interested in
Balance this chemical equation SiO2+HF=SiF4+H2O
tatuchka [14]

Answer:  SiO2 + 4HF = SiF4 + 2H2O

Explanation:

pls mark brainliest if right if not im so sorry

7 0
2 years ago
At 1 atm, how much energy is required to heat 39.0 g of h2o(s at –24.0 °c to h2o(g at 121.0 °c?
earnstyle [38]
Q = mcΔt, q = energy [J] m = mass (of water) [g]; c = specific heat capacity of water [J g⁻¹ K⁻¹/°C⁻¹]; Δt = change in temperature [K/°C]
Δt = 121 - -24 = 145
q = 39 × 4.18 × 145
q = 23637.9 J
4 0
2 years ago
Which is a molecule?<br> A. Ne<br> B. NaCL<br> C. Trail Mix<br> D. graphene
elixir [45]
B) NaCl is a molecule.
5 0
3 years ago
Where was the first oil well drilled​
zepelin [54]

Answer:

First oil well in the United States, built in 1859 by Edwin L. Drake, Titusville, Pennsylvania.

7 0
3 years ago
A 30.5-g sample of water at 300. K is mixed with 48.5 g water at 350. K. Calculate the final temperature of the mixture assuming
ahrayia [7]

Answer:

sorry but i cant

Explanation:

8 0
2 years ago
Other questions:
  • What type of coloration do the stonefish and oscellated frog fish have
    15·1 answer
  • Why is important for the lens to be attached to the muscles in the eye?
    12·1 answer
  • What variable represents specific heat in the equation q = mct?
    11·1 answer
  • A graduated cylinder holds 100 mL of water. A lead weight is dropped into the cylinder bringing the new volume up to 450 mL. If
    5·1 answer
  • What is an isototope?
    8·2 answers
  • Which subatomic particle is responsible for chemical properties of atoms?
    15·1 answer
  • On a hot summer day in Florida, Sarah was having a picnic with her family. She took a glass, which had been sitting in the Sun,
    6·1 answer
  • if the force between two charged particles increases,but the distance between them does not change, then:
    12·1 answer
  • Name the type of reaction shown:2C4H10+13O2=8CO2+10H2O
    7·1 answer
  • BRAINLIEST!!!!!! PLEASE HELP ASAP!!!!!! PLEASE ANSWER THESE!!!!! PLEASE DON'T SPAM!!!!!.​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!