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
Akimi4 [234]
3 years ago
12

Complete combustion of 7.50 g of a hydrocarbon produced 23.1 g of CO2 and 10.6 g of H2O. What is the empirical formula for the h

ydrocarbon ?
Chemistry
2 answers:
r-ruslan [8.4K]3 years ago
7 0
A CH compound is combusted to produce CO2 and H2O 
CnHm + O2 -----> CO2 + H2O 
Mass of CO2 = 23.1g
 Mass of H2O = 10.6g
 Calculate by mass of the compounds
 For Carbon C, divide by molecular weight of CO2 and multiply with Carbon
molecular weight. So C in grams = 23.1 x (12.01 / 44.01) = 6.3 g C
 For Hydrogen H, divide by molecular weight of H2O and multiply with Hydrogen molecular weight. So H in grams = 10.6 x (2.01 / 18.01) = 0.53 g C
= 1.18 of H
 Calculate the moles for C and H
 6.3 grams of C x (1 mole/12.01 g C) = 0.524 moles of C
 1.18 grams of H x (1 mole/1.008 g H) = 1.17 moles of H
 Divides by both mole entities with smallest
 C = 0.524 / 0.524 = 1 x 4 = 4
 H = 1.17 / 0.524 = 2.23 x 4 = 10
 The empirical formula is C4H10.
steposvetlana [31]3 years ago
7 0
Chemical reaction: CₓHₐ + O₂ → xCO₂ + a/2H₂O.
m(CₓHₐ) = 7,50 g.
m(CO₂) = 23,1 g.
m(H₂O) = 10,6 g.
n(CO₂) = m(CO₂) ÷ M(CO₂).
n(CO₂) = 23,1 g ÷ 44 g/mol.
n(CO₂) = n(C) = 0,525 mol.
n(H₂O) = 10,6 g ÷ 18 g/mol = 0,588.
n(H₂O) : n(H) = 1 : 2.
n(H) = 1,176 mol.
n(H) : n(C) = 1,176 mol : 0,525 mol.
n(H) : n(C) = 2,25 : 1 /×4.
n(H) : n(C) = 9 : 4.
C₄H₉.
You might be interested in
Which number label represents the nucleus? 6,5,3,2 ​
vazorg [7]

Answer:

5

Explanation:

Nucleus is the center or "CEO" of the cell, that holds the cell's DNA and controls the cells' function.

4 0
3 years ago
Read 2 more answers
Urgent plzz help meeee thx
MakcuM [25]

Answer:

8

Explanation:

From the question given above, the following data were obtained:

t–butyl ion = (CH₃)₃C⁺

Number of valence electron =?

The valence electron(s) talks about the combining power of an element or compound as the case may be.

Considering the t–butyl ion, (CH₃)₃C⁺ we can see that it has a charge of +1 indicating that it has given out 1 electron to attain the stable octet configuration which has a valence electrons of 8. Thus, the valence electron of t–butyl ion, (CH₃)₃C⁺ is 8

5 0
3 years ago
What do you think will happen to the Kool-Aid drink after it is boiled? CER(Claim,CITE evidence and reasoning) response THANK U
mafiozo [28]

Answer:

It is just sugar decomposing to a dark tar looking goo.

Explanation:

Cite: What happens after you boil kool-aid

4 0
3 years ago
Explain why the larger the hydrocarbon molecule is the more
RideAnS [48]

Answer:

Longer hydrocarbon molecules have a stronger intermolecular force. More energy is needed to move them apart so they have higher boiling points . This makes them less volatile and therefore less flammable

6 0
3 years ago
Read 2 more answers
36
LiRa [457]
Omg that is that ( but I do not know this
4 0
3 years ago
Read 2 more answers
Other questions:
  • Explain the changes that take place at the molecular level when a substance is superheated or supercooled ?
    13·1 answer
  • The solar wind can interact with Earth's magnetic field to create powerful electric currents that cause .......... near the pole
    7·1 answer
  • The isotope Np-238 has a half life of 2.0 days if 96 grams of it were present on Monday how much will remain six days later
    11·1 answer
  • The scientific method is critical to scientific study. In an essay, discuss the possible use of the scientific method in everyda
    11·1 answer
  • A cough syrup contains 5.0 % ethyl alcohol C2H5Oh by mass. If the density of the solution is 0.9928 g/ml. Determine the molarity
    10·1 answer
  • C. How many grams of Na2SiO3 can react with 0.800 g of HF?
    5·1 answer
  • Describe what Rutherford would have seen in his gold foil experiment if J.J Thompson's Plum Pudding model was completly accurate
    14·1 answer
  • When sodiuni chloride reacts with silver ni-
    9·1 answer
  • Nonliving and living things are made of matter.which of the following statements is true about matter
    9·1 answer
  • Ngl I have no clue what I’m doing can someone help me pls this is due liek in 15 mins
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!