1. In 75 seconds 400ml of oxygen diffuses through a glass tube. If It takes 25 seconds for 100 ml of a gas X to diffuse through the same tube under similar conditions, calculate the relative molecular mass of the gas X

Ithink that the use of creativity in the sciences entails that one produce something out of nothing or from another thing. with this, i think that the he wrote down his results as four parts of the atomic theory is the manifestation of the  creativity of john dalton.