The dark product obtained is washed with water, hydrochloric acid and hydrofluoric acid, and finally calcined again with the oxide or with borax, being protected from air during the operation by a layer of charcoal. [Please select]
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_--Give powdered iron, or iron reduced by hydrogen, or calcined magnesia. [Please select]
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From dawn till nightfall a merciless sun calcined the ground. [Please select]
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_--The hyoid plate is curved, thin, and mostly cartilaginous, but calcined posteriorly (Fig.) [Please select]
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The brick walls are burnt red, and many of the alabaster vases are almost calcined. [Please select]
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If any traces of the grease are left, apply powdered calcined magnesia. [Please select]
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Bone, well calcined and powdered, and plaster of Paris are also excellent absorbents of grease. [Please select]
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