A state of gas; or between p and v, the reciprocal of D, which may be called the gravimetric volume (G.

Guye has given a critical discussion of the relative accuracy of the gravimetric and physico-chemical methods, and favours the latter, giving for the atomic weight a value less than 14.01.

His terminology was vague and provoked caustic criticism from Berzelius; he assumed that all molecules contained two atoms, and consequently the atomic weights deduced from vapour density determinations of sulphur, mercury, arsenic, and phosphorus were quite different from those established by gravimetric and other methods.

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The most accurate method for the determination of lead in ores is the gravimetric method, in which it is weighed as lead sulphate after the various impurities have been separated.

Volumetric analysis, possessing as it does many advantages over the gravimetric methods, has of late years been extensively developed.

Pressure In A Closed Vessel Observed And Calculated Gravimetric Volume Fig 9.

Standard solutions are prepared by weighing out the exact amount of the pure substance and dissolving it in water, or by forming a solution of approximate normality, determining its exact strength by gravimetric or other means, and then correcting it for any divergence.

The formulation of the atomic theory by John Dalton gave a fresh impetus to the development of quantitative analysis; and the determination of combining or equivalent weights by Berzelius led to the perfecting of the methods of gravimetric analysis.

The term gravimetric density (G.D.) is peculiar to artillerists it is required to distinguish between the specific gravity (S.