During a phase change, the temperature remains constant although heat is still being added. What is the BEST explanation for what the heat energy is being used to do? A.
increasing the movement of particles

B.
weakening or breaking the inter molecular forces

C.
making chemical bonds to form new substances

D.
moving the particles closer together

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.

it would be b. 6co2 + 6h2o --> c6h12o6 + 6o2