The molar mass and molecular weight of Chlorine gas (Cl2) is 70.9060 g/mol.
The composition of the Cl2 formula is as follows:
| Element | Symbol | Atomic Weight | Atoms | Total Atomic Weight | Mass Percent |
|---|---|---|---|---|---|
| Chlorine | Cl | 35.453 g/mol | 2 | 70.9060 g/mol | 100.0000% |
How to find the molar mass of Chlorine gas (Cl2)?
The molar mass and molecular weight of Chlorine gas (Cl2) can be calculated in 4 steps.
Step I: Identify the different elemental atoms present in the Cl2 compound.
The given compound is Cl2. It comprises atoms from 1 different elements i.e., and Chlorine (Cl).
Step II: Find the atomic weight of each element in the Cl2.
Here is the list of atomic weights for all elements, let’s check the and Chlorine (Cl) atom’s atomic weight.
• The atomic weight of Chlorine (Cl) is 35.453 g/mol.
Step III: Determine the number of atoms of each element present in the Cl2 compound.
As per the chemical formula, Cl2, It is made up of and 2 Chlorine atoms.
| Element | Number of Atoms |
|---|---|
| Cl (Chlorine) | 2 |
Step IV: Calculate the molar mass of the Chlorine gas (Cl2) compound by applying the formula:
For Chlorine gas (Cl2):
Substituting into the above formula, the values determined in steps II and III:
Molar mass of Cl2 = [(35.453 x 2)]
Molar mass of Cl2 = 70.906 = 70.9060 g/mol
Result: The molecular weight and molar mass of Chlorine gas (Cl2) is 70.9060 g/mol.
FAQs
What is the mass percent composition of Chlorine (Cl) in Chlorine gas (Cl2)? |
To find the mass percent of Chlorine in Cl2, follow the steps given below:
∴ Mass of Chlorine in Cl2 = 35.453 x 2 = 70.9060 g/mol. Mass Percent Composition (%) Formula = (Mass of Element in the Compound/Molar Mass of the Compound) x 100 ∴ Mass percent of Chlorine in Cl2 = (Mass of Chlorine in Cl2/Molar mass of Cl2) × 100% Result: Cl2 contains 100.00 % of Chlorine as per its chemical composition.
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What is the atomic percentage composition of elements in Chlorine gas (Cl2)? |
| Atomic percentage composition formula (%) = Number of atoms of a particular element in a compound/Total number of atoms in that compound
For Cl2: The atomic percentage composition of elements in the compound is: Atomic percentage of Chlorine (Cl) in Cl2:
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How many grams of Chlorine are present in 1 mole of Cl2? |
| There are 2 Cl-atoms in a Cl2 molecule. • Atomic weight of a Cl-atom = 35.453 g/mol ∴ Total mass of Chlorine in 1 mole of Cl2 = 2 x 35.453 = 70.91 g. Therefore there are 70.91 grams of Chlorine in 1 mole of Cl2. |
What is the mass of 2 mol of Cl2? |
| The molecular mass of Cl2 is 70.9060 g/mol. This means 70.9060 grams of Cl2 are present per mole. Therefore, we can find the mass of Cl2 in 2 moles as follows: ∴ Moles = Mass/Molar Mass ∴ Mass of Cl2 = Moles x Molar mass ∴ Mass of Cl2 = 2 x 70.9060 = 141.81 g Thus, the mass of 2 mol of Cl2 is 141.81 g. |
If you have 49.6342 grams of Cl2, how many moles do you have? |
| ∴ Moles = Mass/Molar mass ∴ Moles of Cl2 = 49.6342/70.9060 = 0.7000 Thus, there are 0.7000 moles of Cl2 in its 49.6342 grams. |
What is the mass in kg of 11.82 x 1025 molecules of Cl2? |
| 1 mole of a substance contains Avogadro number of particles i.e., 6.02 x 1023. Therefore, the number of moles in 11.82 x 1025 molecules of Cl2 are: ∴ Moles of Cl2 = 11.82 x 1025/6.02 x 1023 = 196.3
Now that we have its number of moles, so, we can use the molar mass of Cl2 (70.9060 g/mol) to find its mass as shown below. ∴ Mass of Cl2 = Moles x Molar mass
∴ Mass of Cl2 = 196.3 x 70.9060 = 13919.33 g
Converting mass from grams (g) to kilograms (kg) gives us: ∴ Mass of Cl2 = 13919.33/1000 = 13.92 kg
The mass of 11.82 x 1025 molecules of Cl2 is 13.92 kg.
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What is the molar mass and molecular weight of Chlorine gas (Cl2)? |
Cl2 is composed of .
To find the molecular mass of Cl2, one multiplies the atomic weight of each element by its number of atoms in the molecule and then sums the results. ∴ For Cl2, it’s (2 x 35.4530).
Therefore, the molar mass of Chlorine gas (Cl2) is 70.9060 g/mol.
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