The Use of a Dye in the Dumas Method of Determining Molecular Weight lbfrrmining the rr~olerul:uweight c,f a volarilr liquid by the Dumas hlethod is a 6imple experiment ultirlt rn~liej t e f I . I a s I . Beesuie it illuitrate~the gar; law, tli. t:xprrimmt is frcqwntly inclwbd i n the I d w r u i r q pn,grml 1.1brginr~ingchemistry c