Chemistry High School

Glycerol has a molar mass of 92.09g/mol. Its percent composition is: 39.12% C, 8.75% H,
and 51.12% O. What is the molecular formula for glycerol?

Glycerol Has A Molar Mass Of 92.09g/mol. Its Percent Composition Is: 39.12% C, 8.75% H,and 51.12% O.

Answers

Answer 1

Answer:

Molecular formula => C₃H₈O₃

Explanation:

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

Carbon (C) = 39.12%

Hydrogen (H) = 8.75%

Oxygen (O) = 51.12%

Molar mass of compound = 92.09 g/mol

Molecular formula =?

Next, we shall determine the empirical formula of the compound. This can be obtained as follow:

C = 39.12%

H = 8.75%

O = 51.12%

Divide by their molar mass

C = 39.12 / 12 = 3.26

H = 8.75 / 1 = 8.75

O = 51.12 / 16 = 3.195

Divide by the smallest

C = 3.26 / 3.195 = 1

H = 8.75 / 3.195 = 2.7

O = 3.195 / 3.195 = 1

Thus, the empirical formula is CH₂.₇O

Finally, we shall determine the molecular formula of the compound. This can be obtained as follow:

Empirical formula = CH₂.₇O

Molar mass of compound = 92.09 g/mol

Molecular formula =?

Molecular formula = Empirical formula × n

Molecular formula = [CH₂.₇O]ₙ

92.09 = [12 + (2.7×1) + 16] × n

92.09 = 30.7n

Divide both side by 30.7

n = 92.09 / 30.7

n = 3

Molecular formula = [CH₂.₇O]ₙ

Molecular formula = [CH₂.₇O]₃

Molecular formula = C₃H₈O₃

Related Questions

Which best completes the analogy?
B Cells : Produce Antibodies :: T Cells : ___________________
A. Get rid of good cells that have been infected
B. Tell B cells to start making antibodies
C. Tell killer cells to attack
D. remember antigens that have attacked the body

Answers

Answer:

d

Explanation:

d

If 13 grams of copper sulfate is reacted with zinc how much of each product is produced?

Answers

Answer:

No. Of Moles of zinc = m/Ar

= 13/ 65.38 = 0.198 moles

From balanced equation, Mole ration between CuSO4 and Zn is 1 : 1

So only 0.198 moles of CuSO4 reacts, it is in excess

Mass = no of Moles X Mr

Mass = 0.198 X 159.5 = 31.59 grams

Volume = mass m denisty

Volume j 31.59 / 3.6 = 8.78 ml

Explanation:

i think this wrong

what is a carnivore?​

Answers

Answer:

I think its when someone eats only meat

Answer:

A meat eater. Or a animal that has a diet strictly set to other animals.

Explanation:

Hope this helps!

What is the mass of disulfur pentoxide (S2O5)?

Answers

Answer: What is the mass of disulfur pentoxide (S2O5)?

Explanation:144.14g/mol

please help! due soon!

Answers

Answer:

I think it's

there are the same number of molecules on each side of the equation, then a change of pressure makes no difference to the position of equilibrium

How many particles in 352 moles of KLICO3?
O 106 particles
O 2.12 x 1026 particles
O 6.38 x 1025 particles

Answers

Answer:

there are 106 particles

You are given 250 mL of a 12.0 M solution of KNO3. To obtain a 5.0 M, to what volume does the solution need to be diluted to?
600 ml
104.17 mL
0.24 mL
60 mL

Answers

Answer:

600 mL

Explanation:

molarity 1 * volume 1 = molarity 2 * volume 2. So this means 12 * 250 = 3000 and divide that by 5 to get 600 mL.

Give an example of a metal and a nonmetal you use in everyday life.​

Answers

Money and clothes& shoes

Answer:

A type of metal I use everyday in life in using the iron door knob on my doors.

A nonmetal I use everyday is chlorine for when I need to clean my pool.

Explanation:

Is this your intention?

Which of the following elements has the ability to undergo sublimation
iodine
oxygen
carbon sodium

Answers

Answer:

iodine

Explanation:

Low-beam headlights must show objects _______ feet ahead.

Answers

Answer:

150 feet

Explanation:

What causes the process of transmutation?
O A. A gamma ray is emitted from an atom's nucleus.
B. Mass is lost due to the formation of a nucleus.
C. Quarks in the nucleus shift between particles.
D. The number of protons in the nucleus changes.

Answers

Answer: D. The number of protons in the nucleus changes.

Explanation:

Transmutation occurs due to a change in the number of protons in the nucleus as this will cause the element to either become another isotope of the same element or an entirely new element altogether.

There are two types of transmutation; Natural and Artificial. Natural transmutation happens as unstable elements such as Uranium-238 try to find stability. They decay until they become a stable element. Artificial transmutation happens when atoms are collided with particles that cause them to change.

Here anwser questions 2 ,4,6 those charts okay I also put how the formula on top solve these problems ! Please help me I geniunuly don’t understand this concept if you do I will mark you brainliest I don’t understand :( ! please don’t scam me I’m helpless

Answers

Answer:

39.5L

Explanation:

What volume of water is needed to make 5.41 M solution with 47.71 moles of HCL?

Answers

Answer:

0.113 liters

Explanation:

5.41 M / 47.71 moles = 0.113 liters

How many moles of nitrogen are in 12 grams

Answers

Answer:

Explanation:

The chemical formula of nitrogen is N2

A mol of Nitrogen atoms = 14 grams

So N2 will have a molar mass of 14 * 2 = 28 grams

number of moles of N2 = given mass / molar mass

number of moles of N2 = 12 / 28

number of moles of N2 = 0.4286 mols

What is formed when 2 non metals reacts?

A) covalent bond
B) ionic bond
C) molecular bond

Answers

Answer:

A) covalent bond

Explanation:

Covalent bonding generally happens between nonmetals.

In the Caribbean countries, general election is usually held every _ years​

Answers

it is held every 4-5 years

how many atoms are in 4.5 moles of Al?

Answers

Explanation:

4.5×6.022×10²³

27.099×10²³

According to Avogadro's number, there are 27.10×10²³ atoms in  4.5 moles of Al.

What is Avogadro's number?

Avogadro's number is defined as a proportionality factor which relates number of constituent particles with the amount of substance which is present in the sample.

It has a SI unit of reciprocal mole whose numeric value is expressed in reciprocal mole which is a dimensionless number and is called as Avogadro's constant.It relates the volume of a substance with it's average volume occupied by one of it's particles .

According to the definitions, Avogadro's number depend on determined value of mass of one atom of those elements.It bridges the gap between macroscopic and microscopic world by relating amount of substance with number of particles.

Number of atoms can be calculated using Avogadro's number as follows: mass/molar mass×Avogadro's number.As 1 mole =6.023×10²³ atoms , thus,4.5 moles =4.5×6.023×10²³ = 27.10×10²³  atoms.

Thus, there are 27.10×10²³ atoms in  4.5 moles of Al.

Learn more about Avogadro's number,here:

https://brainly.com/question/11907018

#SPJ2

In which type of chemical reaction would two reactants join together and form one product

Answers

Answer:

Synthesis Reaction

Explanation:

A synthesis reaction occurs when two or more reactants combine to form a single product. In a decomposition reaction, one reactant breaks down into two or more products. This is the reverse of a synthesis reaction. Replacement reactions occur when elements switch places in compounds.

in figure 21-4b in what direction is the force defeating the wire

Answers

Answer:

the one that has more power to it

what does the period number on the periodic table tell us?

Answers

Answer:

The period number on the Periodic table tells you the total number of orbits that the atom will have. In other words, the period number indicates the number of energy levels (or energy orbit) of an atom. For example, 1st period indicates that these elements possess 1 energy shell (or energy orbit).

Explanation:

The period number on the periodic tells you the total number of orbits that the atom will have (indicates the number of energy levels )

ILL MARK AS BRAINLESS PLS HELP

Answers

we can’t do anything with that

what name is given to group II elements in the periodic table

Answers

Answer:

alkaline earth metals

hope this helps

have a good day :)

Explanation:

Answer:

Alkaline earth metals

Explanation:

5). At what temperature (K) will 0.854 moles of neon gas occupy 12.3 L at 1.95
atmospheres?

Answers

Answer:

338.38 K

Explanation:

Applying,

PV = nRT............... Equation 1

Where P = pressure, V = Volume, R = Temperature, n = number of moles, T = temperature.

Make T the subject of the equation,

T = PV/nR............. Equation 2

From the question,

Given: P = 1.95 atm, V = 12.3 L, n = 0.854 moles

Constant: R = 0.083 L.atm/K.mol

Substitute these values into equation 2

T = (1.95×12.3)/(0.854×0.083)

T = 338.38 K

11
Cr2O3 + 2Al → 2Cr + Al2O3
Chromium is produced by reacting its oxide with aluminum. If 76 g of Cr2O, and 27 g of Al completely react to form 51 g of Al2O3. how many grams of Cr are formed?

Answers

Answer:

Deci trebuie sa te aplici cu 2 din3 pe suprafata pamanyului chinez

Explanation:

Deci 1287+2086+2762+7:5

What is the pressure of a car tire that had an initial pressure of 33.7 kPa but was
heated from 98.4°C to 110.°C?

Answers

Answer:

34752.6 Pa.

Explanation:

Applying,

P/T = P'/T'............... Equation 1

Where P = Initial Pressure, T = Initial Temperature, P' =  Final pressure, T' = Final temperature.

make P' the subject of the equation

P' = (PT'/T).............. Equation 2

From the question,

Given: P = 33.7 kPa = 33700 Pa, T = 98.4°C = (273+98.4) = 371.4 K, T' = (110+273) = 383 K

Substitute these values into equation 2

P' = (33700×383)/371.4

P' = 34752.6 Pa.

what is:
Na2O+SO2 =
for chemistry​

Answers

Na2SO3 – Sodium sulfite

How do you write balance equations Fe2 S3+O2-Fe2O3+SO2

Answers

Answer:

2Fe2 S3+6O2 → 2Fe2O3+3SO2

Explanation:

Select the correct answer.
A sample taken from a layer of mica in a canyon has 2.10 grams of potassium-40. A test reveals it to be 2.6 billion years old. How much
potassium-40 was in the sample originally if the half-life of potassium-40 is 1.3 billion years?
OA.
4.20 g
© B.
8.40 g
OC.
12.6 g
O D. 16.8 g
O E. 25.2[H

Answers

Answer: B 8.40 g

Explanation:


Which of the following statements about alkynes is incorrect?

Alkynes are unsaturated hydrocarbons.


Alkynes have triple bonds.


Alkynes are saturated hydrocarbons.


Alkynes have carbon atoms.

Answers

Answer:

Alkynes are saturated hydrocarbons

Explanation:

Alkynes are groups of hydrocarbons that have the general formula of {Cn H2n - 2}. They have a triple carbon to carbon bond (C≡C) in their structure. Ethyne (HC≡CH) is the first member of the alkyne series.

Alkynes like alkenes are unsaturated hydrocarbons because of their triple and double carbon bonds respectively. Unsaturated hydrocarbons do not have a complete hydrogen atom in their structural composition. Hence, the statement that "Alkynes are saturated hydrocarbons" is FALSE.

What is a state function?

Answers

Is a function defined for a system relating several state variables or state quantities that depends only on the current equilibrium thermodynamic state of the system[1] (e.g. gas, liquid, solid, crystal, or emulsion), not the path which the system took to reach its present state. A state function describes the equilibrium state of a system, thus also describing the type of system. For example, a state function could describe an atom or molecule in a gaseous, liquid, or solid form; a heterogeneous or homogeneous mixture; and the amounts of energy required to create such systems or change them into a different equilibrium state.
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