Is there a relationship between equivalent volume and density? If so, what is it? Try plotting the equivalent volume V vs. the density ρ, then ln V vs. ρ, and then ln V vs. ln ρ. Is the result of any of the plots a straight line? If so, note the slope m and y-intercept b, and write the resulting equation y = mx + b in terms of V and ρ. Finally, solve that equation for V as a function of ρ; that is the relationship between equivalent volume and gas density.
gas equivalent vol. spec. gravity hydrogen 3.83 0.0694 [original had 0.694, a typo] carburetted hydrogen 1.344 0.555 olefiant gas 1.0191 0.972 carbonic oxide 1.0149 0.972 nitrogen 1.0143 0.972 oxygen 0.9487 1.111 [original had 0.111, a typo] sulphuretted hydrogen 0.95 1.1805 protoxide of nitrogen 0.82 1.527 carbonic acid 0.812 1.527 sulphurous acid 0.68 2.222 (Download a spreadsheet file containing Graham's data by clicking here.)
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