What do we assume about the volume of the actual molecules themselves in a sample of gas, compared to the bulk volume of the gas overall? why?

We assume that the volume of the molecules themselves in a gas sample is negligible compared to the bulk volume of the gas sample: this helps us to explain why gases are so compressible.

1. they vary with a higher number because boiling is way hotter than melting

every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.