After some time the colour entirely disappeared; the strip of copper was then taken out and reweighed, and it was found to have lost 8.03 grams. Thus the chlorine, which in the coloured compound was in union with 8 grams of copper, appears, in the colourless chloride, to be combined with 16.03 grams, or almost exactly double the amount. [Please select]
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The dish is then cooled in a dessicator and reweighed. [Please select]
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Every particle of dross I would have collected and carefully separated from any metal it might contain; the whole should then have been reweighed, and its reduction in the smelting process ascertained. [Please select]
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Joe scratched his ear, picked up a piece of quartz, the smallest in the lot, weighed and reweighed it, and tossed it up and down in his hand. [Please select]
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