Answer
(a) See picture to find out the number of hydrogens per carbon atom. Molecular formula: $C_{10}H_{11}N$
(b ) See picture to find out the number of hydrogens per carbon atom. Molecular formula: $C_{11}H_{11}O_{2}Br$
(c ) See picture to find out the number of hydrogens per carbon atom. Molecular formula: $C_{9}H_{11}O$
Work Step by Step
- To find out the number of hydrogens bonded to a carbon atom, just count the lines that are connected to a specific carbon atom. To finally get the number of H-atoms apply the following formula:
$4 - lines = xH$
- the molecular formula contains the actual number of each type of atom in a molecule or compound, i.e. the actual number of atoms in a molecule.
- So, in order to get the molecular formula for each substance, you count the number of atoms that occur for each type of atom in a molecule.
