Why is doing research if you're creating the procedure for an experiment?
a. someone else may have results you can copy for yourself.
b. it can you avoid problems with your experiment not working.
c. research lets you know if your hypothesis is correct ahead of time.
d. online sources will tell you what your independent variable should be.

answer:

a is right but also wrong dont copy off of someone elses

b is right

c and d you need that for yourself

explanation:

vanderwaal's forces of attraction are the electrostatic intermolecular forces that exist in a molecule due to the temporary or permanent dipoles that are developed in a molecule. in , the major intermolecular forces are dipole-dipole interactions as the molecule is polar (bent structure). so the vanderwaal's forces of interaction in between molecules are the permanent dipole-dipole interactions that develop due to the dipole that exists in between the polar h - s bond. the positively charged hydrogen atom is attracted towards the negative end of the dipole that is sulfur of the adjacent molecule. therefore, these forces of attraction are relatively stronger than that of london dispersion forces that exist in non polar molecules.