Calculate the molar mass of HCl
The correct answer and explanation is:
To calculate the molar mass of HCl (hydrochloric acid), you need to sum the atomic masses of hydrogen (H) and chlorine (Cl).
- Atomic Mass of Hydrogen (H): Hydrogen has an atomic mass of approximately 1.008 g/mol.
- Atomic Mass of Chlorine (Cl): Chlorine has an atomic mass of approximately 35.45 g/mol.
The molar mass of HCl is the sum of these two atomic masses: Molar mass of HCl=Atomic mass of H+Atomic mass of Cl\text{Molar mass of HCl} = \text{Atomic mass of H} + \text{Atomic mass of Cl} Molar mass of HCl=1.008 g/mol+35.45 g/mol=36.458 g/mol\text{Molar mass of HCl} = 1.008 \, \text{g/mol} + 35.45 \, \text{g/mol} = 36.458 \, \text{g/mol}
So, the molar mass of HCl is approximately 36.46 g/mol.
Explanation:
The molar mass is an essential concept in chemistry because it allows chemists to calculate how much of a substance is required for a given number of moles. The molar mass represents the mass of one mole of a compound.
To calculate the molar mass of a compound, first identify the elements present in the molecule. In this case, HCl contains hydrogen (H) and chlorine (Cl). Then, determine the atomic mass of each element from the periodic table, which gives the mass of one mole of atoms of that element. Finally, add the atomic masses together to find the total molar mass of the compound.
This process is universal for any molecular compound. The molar mass provides valuable information for tasks such as converting between grams and moles or determining the number of atoms in a specific quantity of a substance.