Please help with number 2 and 3 but can you label how many carbons and hydrogens on each because I do need to learn this. It helps to see everything visual. Thank you

2. Determine how each of the structures below is related to the following structure: same molecule, constitutional isomer, or neither. somer idenlical 3. For each of the following determine the number of carbons, hydrogens, heteroatoms, and lone pairs of electrons. C's: HA's: C's: HA's: C's: HA's: H's: Lone Pairs: H's: Lone Pairs: H's: Lone Pairs