SANAA
UREMBO NA USTAWI
UJANJA
UTAMADUNI NA HISTORIA
BURUDANI
MAZINGIRA
CHAKULA NA VINYWAJI
UHANDISI WA KINYUME
SAYANSI
MICHEZO
TEKNOLOJIA
VAZI
Hatari
Beryllium: Glucinum Chloride Vapour over Melted Sodium in Hydrogen (Debray, Roscoe 1913)
Boats in a row inside a glass tube: the first holds beryllium chloride, the rest sodium. Under dry hydrogen the chloride boils off and is stripped of its chlorine by the melted sodium further along.
Result: coherent beryllium, a hard, bright silver-white metal (sp. gr. 1.93). Its dust and powder are poisonous to breathe and burn brilliantly.
Source: Roscoe and Schorlemmer, A Treatise on Chemistry vol. 2 (1913), p. 618, after Debray. Not given: amounts and how the tube is heated. Picture drawn by Youblob.
Juu
1 day
Maudhui hatari
Blueprint hii ina taratibu za hatari. Ingia na uwashe maudhui ya hatari katika mipangilio ya akaunti yako ili kuona maagizo ya hatua kwa hatua.
IngiaMchoro huu unatengeneza
CC0 Umma Wote
Mchoro huu umetolewa chini ya CC0. Uko huru kunakili, kubadilisha, kusambaza, na kutumia kazi hii kwa madhumuni yoyote, bila kuomba ruhusa.
Saidia Mtengenezaji kwa kununua bidhaa kupitia Mchoro wao ambapo wanapata Kamisheni ya Mtengenezaji iliyowekwa na Wachuuzi, au unda marudio mapya ya Mchoro huu na uiunganishe kama kiungo katika Mchoro wako kuchangia mapato.