The molar mass and molecular weight of Calcium chloride (CaCl2) is 110.9860 g/mol.
The composition of the CaCl2 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 | 63.8873% |
| Calcium | Ca | 40.08 g/mol | 1 | 40.0800 g/mol | 36.1127% |
How to find the molar mass of Calcium chloride (CaCl2)?
The molar mass and molecular weight of Calcium chloride (CaCl2) can be calculated in 4 steps.
Step I: Identify the different elemental atoms present in the CaCl2 compound.
The given compound is CaCl2. It comprises atoms from 2 different elements i.e., Chlorine (Cl) and Calcium (Ca).
Step II: Find the atomic weight of each element in the CaCl2.
Here is the list of atomic weights for all elements, let’s check the Chlorine (Cl) and Calcium (Ca) atom’s atomic weight.
• The atomic weight of Chlorine (Cl) is 35.453 g/mol.
• The atomic weight of Calcium (Ca) is 40.08 g/mol.
Step III: Determine the number of atoms of each element present in the CaCl2 compound.
As per the chemical formula, CaCl2, It is made up of 2 Chlorine atoms and 1 Calcium atom.
| Element | Number of Atoms |
|---|---|
| Cl (Chlorine) | 2 |
| Ca (Calcium) | 1 |
Step IV: Calculate the molar mass of the Calcium chloride (CaCl2) compound by applying the formula:
For Calcium chloride (CaCl2):
Substituting into the above formula, the values determined in steps II and III:
Molar mass of CaCl2 = [(35.453 x 2) + (40.08 x 1)]
Molar mass of CaCl2 = 70.906 + 40.08 = 110.9860 g/mol
Result: The molecular weight and molar mass of Calcium chloride (CaCl2) is 110.9860 g/mol.
FAQs
What is the mass percent composition of Chlorine (Cl) in Calcium chloride (CaCl2)? |
To find the mass percent of Chlorine in CaCl2, follow the steps given below:
∴ Mass of Chlorine in CaCl2 = 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 CaCl2 = (Mass of Chlorine in CaCl2/Molar mass of CaCl2) × 100% Result: CaCl2 contains 63.89 % of Chlorine as per its chemical composition.
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What is the mass percent composition of Calcium (Ca) in Calcium chloride (CaCl2)? |
To find the mass percent of Calcium in CaCl2, follow the steps given below:
∴ Mass of Calcium in CaCl2 = 40.08 x 1 = 40.0800 g/mol. Mass Percent Composition (%) Formula = (Mass of Element in the Compound/Molar Mass of the Compound) x 100 ∴ Mass percent of Calcium in CaCl2 = (Mass of Calcium in CaCl2/Molar mass of CaCl2) × 100% Result: CaCl2 contains 36.11 % of Calcium as per its chemical composition.
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What is the atomic percentage composition of elements in Calcium chloride (CaCl2)? |
| Atomic percentage composition formula (%) = Number of atoms of a particular element in a compound/Total number of atoms in that compound
For CaCl2: The atomic percentage composition of elements in the compound is: Atomic percentage of Chlorine (Cl) in CaCl2: Atomic percentage of Calcium (Ca) in CaCl2:
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How many grams of Chlorine are present in 1 mole of CaCl2? |
| There are 2 Cl-atoms in a CaCl2 molecule. • Atomic weight of a Cl-atom = 35.453 g/mol ∴ Total mass of Chlorine in 1 mole of CaCl2 = 2 x 35.453 = 70.91 g. Therefore there are 70.91 grams of Chlorine in 1 mole of CaCl2. |
What is the mass of 3 mol of CaCl2? |
| The molecular mass of CaCl2 is 110.9860 g/mol. This means 110.9860 grams of CaCl2 are present per mole. Therefore, we can find the mass of CaCl2 in 3 moles as follows: ∴ Moles = Mass/Molar Mass ∴ Mass of CaCl2 = Moles x Molar mass ∴ Mass of CaCl2 = 3 x 110.9860 = 332.96 g Thus, the mass of 3 mol of CaCl2 is 332.96 g. |
If you have 57.6502 grams of CaCl2, how many moles do you have? |
| ∴ Moles = Mass/Molar mass ∴ Moles of CaCl2 = 57.6502/110.9860 = 0.5194 Thus, there are 0.5194 moles of CaCl2 in its 57.6502 grams. |
What is the mass in kg of 18.50 x 1025 molecules of CaCl2? |
| 1 mole of a substance contains Avogadro number of particles i.e., 6.02 x 1023. Therefore, the number of moles in 18.50 x 1025 molecules of CaCl2 are: ∴ Moles of CaCl2 = 18.50 x 1025/6.02 x 1023 = 307.3
Now that we have its number of moles, so, we can use the molar mass of CaCl2 (110.9860 g/mol) to find its mass as shown below. ∴ Mass of CaCl2 = Moles x Molar mass
∴ Mass of CaCl2 = 307.3 x 110.9860 = 34102.69 g
Converting mass from grams (g) to kilograms (kg) gives us: ∴ Mass of CaCl2 = 34102.69/1000 = 34.10 kg
The mass of 18.50 x 1025 molecules of CaCl2 is 34.10 kg.
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What is the molar mass and molecular weight of Calcium chloride (CaCl2)? |
CaCl2 is composed of 2 Chlorine (Cl), and 1 Calcium (Ca) atom.
To find the molecular mass of CaCl2, one multiplies the atomic weight of each element by its number of atoms in the molecule and then sums the results. ∴ For CaCl2, it’s (2 x 35.4530) + (1 x 40.0800).
Therefore, the molar mass of Calcium chloride (CaCl2) is 110.9860 g/mol.
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