Assertion: phosphorus | /r/HasProperty | prepared
Facets:
value: by burning tetraphosphorus
type: MANNER
value: from bone.(3
type: OTHER
Source sentences:
text: P 4 O 10 is prepared by burning tetraphosphorus with sufficient supply of oxygen:
text: Phosphorus was produced by this method until the 1770s when Swedish scientist Carl Wilhelm Scheele – the discoverer of chlorine and one of oxygen‘s independent discoverers – found that phosphorus could be prepared from bone.(3)
text: P 4 O 10 is prepared by burning tetraphosphorus with sufficient supply of oxygen: