Answer:
Molar mass of acetylene = 26.016 g/mol
Step-by-step explanation:
Molar mass:
molar mass of substance is sum of the atomic weight of individual atoms of element that combine to make the substance.
Molar mass of acetylene:
Atomic weight of carbon = 12 amu
Atomic weight of hydrogen = 1.008 amu
There are two hydrogen and two carbon atom in acetylene.
Molar mass = 12×2 + 1.008 ×2
Molar mass = 24 + 2.016
Molar mass = 26.016 g/mol