A white or colorless mineral (BaSO4); the main source of barium.
A white insoluble radiopaque powder used as a pigment.
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1 The new Ray-X sponge, treated with barium sulphate , eliminates guess work.
2 From the weight of barium sulphate , calculate the percentage of sulphur (S) in the sample.
3 The dissolved barium sulphate , like any electrolyte, is dissociated, and the equilibrium conditions may be expressed thus:
4 It was just the color of barium sulphate , and had a little lace bunched at the throat.
5 In determining it, it is first converted into sulphuric acid, and then precipitated and weighed as barium sulphate .
6 From the weight of barium sulphate (BaSO_{4}) obtained, calculate the percentage of sulphur (S) in the sample.
7 The plain transfer paper is prepared in the same manner, leaving out the barium sulphate and the coloring matters.
8 The contamination of the barium sulphate by iron is much less in the presence of ferrous than ferric salts.
9 It should be borne in mind that the quantity of barium sulphate in this!saturated solution is a constant quantity!
10 Thus barium sulphate , one of the most insoluble of common substances, dissolves in water to the extent of 1 part in 400,000.
11 But a University of Chile laboratory study concluded that some are only 20% rubber, with the rest made up of barium sulphate , silica and lead.
12 A blank experiment must be done with each new lot of peroxide of hydrogen obtained, which always gives under 0.1 barium sulphate with me.
13 Mix, wash well the precipitate-bariumsulphate-bydecantation, and when well drained, mix to the following solution:
14 [Note 6: Barium sulphate requires about 400,000 parts of water for its solution.
15 [Note 2: The ionic changes involved in the precipitation of barium sulphate are very simple:
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Translations for barium sulphate