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
lions [1.4K]
3 years ago
13

A 0.3832-g sample of a compound known to contain only carbon, hydrogen, and oxygen was burned in oxygen to yield 0.7120 g of CO2

and 0.1458 g of H2O. What is the empirical formula of the compound
Chemistry
1 answer:
xxTIMURxx [149]3 years ago
5 0

Answer:

C_3H_3O_2

Explanation:

Hello,

In this case, since the law of conservation of mass allows us to notice that the mass of carbon in the burned compound is also present in the resulting carbon dioxide, we can compute such moles as shown below:

n_C=0.7120gCO_2*\frac{1molCO_2}{44gCO_2} *\frac{1molC}{1molCO_2} =0.0162molC

Next, hydrogen in the sample is present at the products in the water only, and in one mole of water, two moles of hydrogen are present, thereby:

n_H=0.1458gH_2O*\frac{1molH_2O}{18gH_2O}*\frac{2molH}{1molH_2O}=0.0162molH

Nevertheless, the amount of oxygen in the sample must be computed by subtracting both the mass of carbon and hydrogen from the previously computed moles:

m_O=0.3832g-0.0162molC*\frac{12gC}{1molC} -0.0162molH*\frac{1gH}{1molH} =0.1726gO

And the moles:

n_O=0.1726gO*\frac{1molO}{16gO} =0.0108molO

Next, we compute the mole ratios with respect to the element having the smallest number of moles (oxygen) to obtain the subscripts in the empirical formula:

C=\frac{0.0162}{0.0108}=1.5\\ \\H=\frac{0.0162}{0.0108}=1.5\\\\O=\frac{0.0108}{0.0108}=1

Then, we have:

C_{1.5}H_{1.5}O_1

Finally, by multiplying by two, we obtain the smallest whole subscripts:

C_3H_3O_2

Best regards.

You might be interested in
What is the concentration of a 0.750 l solution that contains 52.0 g of glucose (c6h12o6)?
vodka [1.7K]
Concentration of Solutions is oftenly expressed in Molarity. Molarity is the number of moles of solute dissolved per volume of solution.

                             Molarity  =  Moles / Volume
As,
      Moles  =  Mass / M.mass
So,
                             Molarity  =  Mass / M.mass × Volume   ---- (1)

Data Given;
                   Volume  =  0.750 L

                   Mass  =  52 g

                   M.mass  =  180 g/mol

Putting Values in eq.1,

                     Molarity  =  52 g ÷ (180 g.mol⁻¹ × 0.750 L)

                     Molarity  =  0.385 mol.L⁻¹
7 0
3 years ago
After passing, it is important to always follow through. T/F
VMariaS [17]

Answer:

t

Explanation:

8 0
3 years ago
Mixture of same boiling point cannot be separated by using distillation why?<br>​
Bond [772]

Answer:

both the substances will evaporate

Explanation:

3 0
3 years ago
Read 2 more answers
A scientist is studying two types of worms. Worm X has DNA identical to its parent. Worm Y has a combination of DNA from two par
beks73 [17]

Answer:

2. Worm Y reproduces sexually, which gives it genetic variation.

5 0
3 years ago
Read 2 more answers
Why doesn’t neon readily form an ionic bond?
Goryan [66]

By definition of noble gases, neon does not easily form an ionic bond because it belongs to the group of noble or inert gases, so its reactivity is practically nil.

<h3>Noble gases</h3>

Noble gases are not very reactive, that is, they practically do not form chemical compounds. This means that they do not react with other substances, nor do they even react between atoms of the same gas, as is the case with diatomic gases such as oxygen (O₂).

The chemical stability of the noble gases and therefore the absence of spontaneous evolution towards any other chemical form, implies that they are already in a state of maximum stability.

All chemical transformations involve valence electrons, they are involved in the process of covalent bond formation and the formation of ions. Therefore, the practically null reactivity of the noble gases is due to the fact that they have a complete valence shell, which gives them a low tendency to capture or release electrons.

Since the noble gases do not react with the other elements, they are also called inert gases.

<h3>Neon</h3>

Neon does not easily form an ionic bond because it belongs to the group of noble or inert gases, so its reactivity is practically nil.

Learn more about noble gases:

brainly.com/question/8361108

brainly.com/question/11960526

brainly.com/question/19024000

6 0
3 years ago
Read 2 more answers
Other questions:
  • Post your responses to the following:
    9·1 answer
  • Hiker A has a body mass of 60 kg and carries a 10-kg pack. Hiker B has a body mass of 70 kg and carries a 20-kg pack. At the top
    7·2 answers
  • What is a chemical bond
    13·2 answers
  • The value of ΔG° at 181.0 °C for the formation of calcium chloride from calcium metal and chlorine gas is ________ kJ/mol. At 25
    11·1 answer
  • Powdered aluminum is used in the thermite reaction for welding metals. what role does the powdered aluminum play in this reactio
    11·1 answer
  • The time it takes from a new moon to a waning gibbous moon is about?
    9·1 answer
  • Which TWO statements are true about the changing salt concentrations of ocean water?
    7·1 answer
  • How do you know if you have a balanced equation?
    11·1 answer
  • The circumference of a circle is 6.28 millimeters. What is the circle's diameter?
    12·1 answer
  • Analyze How would tides be affected if the<br> Moon was farther away from Earth?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!