UBUCIKO
UBUHLE NEMPILO
UBUCIKO BEZANDLA
AMASIKO NOMLANDO
EZOKUZIJABULISA
IMVELO
UKUDLA NEZIPHUZO
REVERSE ENGINEERING
IZAYENSI
EZEMIDLALO
UBUCHWEPHESHE
IZINTO EZIGQOKWAYO
Yingozi
Chromic Oxide: Potassium Dichromate Ignited with Sulphur
Chromic oxide, Cr2O3, is the green oxide of chromium: a pigment of great permanence, and the oxide that aluminium reduces to chromium metal. Thorpe (1912) gives Lassaigne's way: potassium dichromate with half its weight of flowers of sulphur, ignited in a crucible, and the mass digested with water. Dichromate is a carcinogen and the spare sulphur burns to sulphur dioxide: respirator, gloves, and work outdoors.
The picture: chromium(III) oxide (Wikimedia Commons).
Ophakathi
1 day
Okuqukethwe okuyingozi
Le blueprint iqukethe izinqubo eziyingozi. Ngena ngemvume bese uvula okuqukethwe okuyingozi kuzilungiselelo ze-akhawunti yakho ukuze ubone iziqondiso zesinyathelo ngesinyathelo.
NgenaLe blueprint yenza
CC0 Isizinda Somphakathi
Le blueprint ikhishwe ngaphansi kwe-CC0. Ukhululekile ukukopisha, ukuguqula, ukusabalalisa, nokusebenzisa ngaphandle kwemvume.
Sekela uMenzi ngokuthenga imikhiqizo nge-Blueprint yabo IKhomishane Yomenzi kumiswe ngabathengisi, noma dala inguqulo entsha yale Blueprint bese uyifaka njengoxhumaniso ku-Blueprint yakho ukuze wabelane ngemali engenayo.