The molar mass and molecular weight of Nitrogen gas (N2) is 28.0134 g/mol.
The composition of the N2 formula is as follows:
| Element | Symbol | Atomic Weight | Atoms | Total Atomic Weight | Mass Percent |
|---|---|---|---|---|---|
| Nitrogen | N | 14.0067 g/mol | 2 | 28.0134 g/mol | 100.0000% |
How to find the molar mass of Nitrogen gas (N2)?
The molar mass and molecular weight of Nitrogen gas (N2) can be calculated in 4 steps.
Step I: Identify the different elemental atoms present in the N2 compound.
The given compound is N2. It comprises atoms from 1 different elements i.e., and Nitrogen (N).
Step II: Find the atomic weight of each element in the N2.
Here is the list of atomic weights for all elements, let’s check the and Nitrogen (N) atom’s atomic weight.
• The atomic weight of Nitrogen (N) is 14.0067 g/mol.
Step III: Determine the number of atoms of each element present in the N2 compound.
As per the chemical formula, N2, It is made up of and 2 Nitrogen atoms.
| Element | Number of Atoms |
|---|---|
| N (Nitrogen) | 2 |
Step IV: Calculate the molar mass of the Nitrogen gas (N2) compound by applying the formula:
For Nitrogen gas (N2):
Substituting into the above formula, the values determined in steps II and III:
Molar mass of N2 = [(14.0067 x 2)]
Molar mass of N2 = 28.0134 = 28.0134 g/mol
Result: The molecular weight and molar mass of Nitrogen gas (N2) is 28.0134 g/mol.
FAQs
What is the mass percent composition of Nitrogen (N) in Nitrogen gas (N2)? |
To find the mass percent of Nitrogen in N2, follow the steps given below:
∴ Mass of Nitrogen in N2 = 14.0067 x 2 = 28.0134 g/mol. Mass Percent Composition (%) Formula = (Mass of Element in the Compound/Molar Mass of the Compound) x 100 ∴ Mass percent of Nitrogen in N2 = (Mass of Nitrogen in N2/Molar mass of N2) × 100% Result: N2 contains 100.00 % of Nitrogen as per its chemical composition.
|
What is the atomic percentage composition of elements in Nitrogen gas (N2)? |
| Atomic percentage composition formula (%) = Number of atoms of a particular element in a compound/Total number of atoms in that compound
For N2: The atomic percentage composition of elements in the compound is: Atomic percentage of Nitrogen (N) in N2:
|
How many grams of Nitrogen are present in 1 mole of N2? |
| There are 2 N-atoms in a N2 molecule. • Atomic weight of a N-atom = 14.0067 g/mol ∴ Total mass of Nitrogen in 1 mole of N2 = 2 x 14.0067 = 28.01 g. Therefore there are 28.01 grams of Nitrogen in 1 mole of N2. |
What is the mass of 2 mol of N2? |
| The molecular mass of N2 is 28.0134 g/mol. This means 28.0134 grams of N2 are present per mole. Therefore, we can find the mass of N2 in 2 moles as follows: ∴ Moles = Mass/Molar Mass ∴ Mass of N2 = Moles x Molar mass ∴ Mass of N2 = 2 x 28.0134 = 56.03 g Thus, the mass of 2 mol of N2 is 56.03 g. |
If you have 19.6094 grams of N2, how many moles do you have? |
| ∴ Moles = Mass/Molar mass ∴ Moles of N2 = 19.6094/28.0134 = 0.7000 Thus, there are 0.7000 moles of N2 in its 19.6094 grams. |
What is the mass in kg of 4.67 x 1025 molecules of N2? |
| 1 mole of a substance contains Avogadro number of particles i.e., 6.02 x 1023. Therefore, the number of moles in 4.67 x 1025 molecules of N2 are: ∴ Moles of N2 = 4.67 x 1025/6.02 x 1023 = 77.6
Now that we have its number of moles, so, we can use the molar mass of N2 (28.0134 g/mol) to find its mass as shown below. ∴ Mass of N2 = Moles x Molar mass
∴ Mass of N2 = 77.6 x 28.0134 = 2172.62 g
Converting mass from grams (g) to kilograms (kg) gives us: ∴ Mass of N2 = 2172.62/1000 = 2.17 kg
The mass of 4.67 x 1025 molecules of N2 is 2.17 kg.
|
What is the molar mass and molecular weight of Nitrogen gas (N2)? |
N2 is composed of .
To find the molecular mass of N2, one multiplies the atomic weight of each element by its number of atoms in the molecule and then sums the results. ∴ For N2, it’s (2 x 14.0067).
Therefore, the molar mass of Nitrogen gas (N2) is 28.0134 g/mol.
|
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/