1. Molecular Formula
* Acetylene is a hydrocarbon with the chemical formula C₂H₂. This means it has two carbon atoms (C) and two hydrogen atoms (H).
2. Molar Mass
* Find the atomic masses of each element:
* Carbon (C): 12.01 g/mol
* Hydrogen (H): 1.01 g/mol
* Multiply the atomic mass of each element by the number of atoms in the molecule:
* Carbon (C): 12.01 g/mol * 2 = 24.02 g/mol
* Hydrogen (H): 1.01 g/mol * 2 = 2.02 g/mol
* Add the masses of all elements together to find the molar mass of acetylene:
* Molar mass of acetylene (C₂H₂): 24.02 g/mol + 2.02 g/mol = 26.04 g/mol
Therefore, the molar mass of acetylene is 26.04 g/mol.
