Structural Formulas for Covalent Molecules Is anyone good at doing these because I am so confused

1) C2H4

2) C3Cl8

3) SCl2

4) HClO2

5) HNO2

6) H2SeO3

7) H2S2

8) C2H6O2

9) C2H7N

10) C2NH3

11) C2PSH3

12) CH2O2PN

13) C2H2S

14) CH2O

15) N2H2

The picture represents the process that produces most of the energy used by living organisms on earth. which process is represented in the picture? a) the magnetic attraction between two hydrogen nuclei. b) the fusion of hydrogen nuclei to produce a helium nucleus in the core of the sun. c) the fission of hydrogen nuclei to produce a helium nucleus in the core of the sun. d) the chemical reaction between hydrogen nuclei to produce a helium nucleus in earth's atmosphere.