The molar mass and molecular weight of Propylene (C3H6) is 42.0808 g/mol.
The composition of the C3H6 formula is as follows:
| Element | Symbol | Atomic Weight | Atoms | Total Atomic Weight | Mass Percent |
|---|---|---|---|---|---|
| Hydrogen | H | 1.00797 g/mol | 6 | 6.0478 g/mol | 14.3719% |
| Carbon | C | 12.011 g/mol | 3 | 36.0330 g/mol | 85.6281% |
How to find the molar mass of Propylene (C3H6)?
The molar mass and molecular weight of Propylene (C3H6) can be calculated in 4 steps.
Step I: Identify the different elemental atoms present in the C3H6 compound.
The given compound is C3H6. It comprises atoms from 2 different elements i.e., Hydrogen (H) and Carbon (C).
Step II: Find the atomic weight of each element in the C3H6.
Here is the list of atomic weights for all elements, let’s check the Hydrogen (H) and Carbon (C) atom’s atomic weight.
• The atomic weight of Hydrogen (H) is 1.00797 g/mol.
• The atomic weight of Carbon (C) is 12.011 g/mol.
Step III: Determine the number of atoms of each element present in the C3H6 compound.
As per the chemical formula, C3H6, It is made up of 6 Hydrogen atoms and 3 Carbon atoms.
| Element | Number of Atoms |
|---|---|
| H (Hydrogen) | 6 |
| C (Carbon) | 3 |
Step IV: Calculate the molar mass of the Propylene (C3H6) compound by applying the formula:
For Propylene (C3H6):
Substituting into the above formula, the values determined in steps II and III:
Molar mass of C3H6 = [(1.00797 x 6) + (12.011 x 3)]
Molar mass of C3H6 = 6.04782 + 36.033 = 42.0808 g/mol
Result: The molecular weight and molar mass of Propylene (C3H6) is 42.0808 g/mol.
FAQs
What is the mass percent composition of Hydrogen (H) in Propylene (C3H6)? |
To find the mass percent of Hydrogen in C3H6, follow the steps given below:
∴ Mass of Hydrogen in C3H6 = 1.00797 x 6 = 6.0478 g/mol. Mass Percent Composition (%) Formula = (Mass of Element in the Compound/Molar Mass of the Compound) x 100 ∴ Mass percent of Hydrogen in C3H6 = (Mass of Hydrogen in C3H6/Molar mass of C3H6) × 100% Result: C3H6 contains 14.37 % of Hydrogen as per its chemical composition.
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What is the mass percent composition of Carbon (C) in Propylene (C3H6)? |
To find the mass percent of Carbon in C3H6, follow the steps given below:
∴ Mass of Carbon in C3H6 = 12.011 x 3 = 36.0330 g/mol. Mass Percent Composition (%) Formula = (Mass of Element in the Compound/Molar Mass of the Compound) x 100 ∴ Mass percent of Carbon in C3H6 = (Mass of Carbon in C3H6/Molar mass of C3H6) × 100% Result: C3H6 contains 85.63 % of Carbon as per its chemical composition.
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What is the atomic percentage composition of elements in Propylene (C3H6)? |
| Atomic percentage composition formula (%) = Number of atoms of a particular element in a compound/Total number of atoms in that compound
For C3H6: The atomic percentage composition of elements in the compound is: Atomic percentage of Hydrogen (H) in C3H6: Atomic percentage of Carbon (C) in C3H6:
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How many grams of Hydrogen are present in 1 mole of C3H6? |
| There are 6 H-atoms in a C3H6 molecule. • Atomic weight of a H-atom = 1.00797 g/mol ∴ Total mass of Hydrogen in 1 mole of C3H6 = 6 x 1.00797 = 6.05 g. Therefore there are 6.05 grams of Hydrogen in 1 mole of C3H6. |
What is the mass of 9 mol of C3H6? |
| The molecular mass of C3H6 is 42.0808 g/mol. This means 42.0808 grams of C3H6 are present per mole. Therefore, we can find the mass of C3H6 in 9 moles as follows: ∴ Moles = Mass/Molar Mass ∴ Mass of C3H6 = Moles x Molar mass ∴ Mass of C3H6 = 9 x 42.0808 = 378.73 g Thus, the mass of 9 mol of C3H6 is 378.73 g. |
If you have 9.4241 grams of C3H6, how many moles do you have? |
| ∴ Moles = Mass/Molar mass ∴ Moles of C3H6 = 9.4241/42.0808 = 0.2240 Thus, there are 0.2240 moles of C3H6 in its 9.4241 grams. |
What is the mass in kg of 7.01 x 1025 molecules of C3H6? |
| 1 mole of a substance contains Avogadro number of particles i.e., 6.02 x 1023. Therefore, the number of moles in 7.01 x 1025 molecules of C3H6 are: ∴ Moles of C3H6 = 7.01 x 1025/6.02 x 1023 = 116.5
Now that we have its number of moles, so, we can use the molar mass of C3H6 (42.0808 g/mol) to find its mass as shown below. ∴ Mass of C3H6 = Moles x Molar mass
∴ Mass of C3H6 = 116.5 x 42.0808 = 4902.53 g
Converting mass from grams (g) to kilograms (kg) gives us: ∴ Mass of C3H6 = 4902.53/1000 = 4.90 kg
The mass of 7.01 x 1025 molecules of C3H6 is 4.90 kg.
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What is the molar mass and molecular weight of Propylene (C3H6)? |
C3H6 is composed of 6 Hydrogen (H), and 3 Carbon (C) atoms.
To find the molecular mass of C3H6, one multiplies the atomic weight of each element by its number of atoms in the molecule and then sums the results. ∴ For C3H6, it’s (6 x 1.0080) + (3 x 12.0110).
Therefore, the molar mass of Propylene (C3H6) is 42.0808 g/mol.
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About the author
Vishal Goyal is the founder of Topblogtenz, a comprehensive resource for students seeking guidance and support in their chemistry studies. He holds a degree in B.Tech (Chemical Engineering) and has four years of experience as a chemistry tutor. The team at Topblogtenz includes experts like experienced researchers, professors, and educators, with the goal of making complex subjects like chemistry accessible and understandable for all. A passion for sharing knowledge and a love for chemistry and science drives the team behind the website. Let's connect through LinkedIn: https://www.linkedin.com/in/vishal-goyal-2926a122b/