A hydrocarbon with a molecular mass greater that 100g/mol?
C8H18 = 114 g/mol
To find a hydrocarbon with a molecular mass greater than 100 g/mol, we need to look for hydrocarbons with larger molecules. Hydrocarbons are compounds consisting of only carbon and hydrogen atoms.
One way to find such hydrocarbons is by looking for those with more carbon atoms. The more carbon atoms in a hydrocarbon, the greater the molecular mass. Let's consider the hydrocarbon C8H18.
The molecular formula of C8H18 represents an alkane called octane. Octane has eight carbon atoms (C8) and 18 hydrogen atoms (H18). To determine its molecular mass, we can calculate the sum of the atomic masses of its constituent atoms.
The atomic mass of carbon (C) is approximately 12.01 g/mol, and the atomic mass of hydrogen (H) is approximately 1.01 g/mol. Multiplying these values by the number of atoms in the molecule and summing them gives us:
(8 * 12.01 g/mol) + (18 * 1.01 g/mol) = 96.08 g/mol + 18.18 g/mol = 114.26 g/mol
Therefore, octane (C8H18) has a molecular mass of approximately 114 g/mol. As it is greater than 100 g/mol, it satisfies the criteria of a hydrocarbon with a molecular mass greater than 100 g/mol.