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The hexagonal (d = 4.29 g/cm 3) form of germanium dioxide is more soluble than the rutile (d = 6.27 g/cm 3) form and dissolves to form germanic acid, H 4 GeO 4, or Ge(OH) 4. [6] GeO 2 is only slightly soluble in acid but dissolves more readily in alkali to give germanates . [ 6 ]
As much as 5 wt % K 2 O may be present, and also H 2 O and Cl. It is a feldspathoid and a member of the sodalite group. [ 4 ] [ 5 ] Hauyne was first described in 1807 from samples discovered in Vesuvian lavas in Monte Somma , Italy, [ 9 ] and was named in 1807 by Brunn-Neergard for the French crystallographer René Just Haüy (1743–1822). [ 4 ]
Chandrayaan-2 orbiter in clean-room being integrated with payloads Chandrayaan-2 composite. The orbiter has several scientific payloads. [1] [3] [98] The Chandrayaan-2 Large Area Soft X-ray Spectrometer (CLASS) from the ISRO Satellite Centre (ISAC), which makes use of X-ray fluorescence spectra to determine the elemental composition of the ...
The suspect in the killing of top Russian general Igor Kirillov has been charged with an act of terrorism resulting in the death of a person, a notice on the website of the Moscow court said on ...
January 2, 2025 at 11:18 AM. The French Quarter is blocked by authorities after a terrorist attack in New Orleans, Louisiana, on January 1, 2025. (Emily Kask/AFP/Getty Images)
The Mystics co-owner’s remarks about the cover garnered backlash from the sports world. Women’s tennis legend Chris Evert, in a reply on X, wrote that Clark “deserves this award because of ...
SCORE Class 6, off-road racing vehicles; South African Class 6 4-6-0; South African Class 6E 4-6-0; Southern Pacific class AC-6; Southern Pacific class GS-6; Southern Pacific class MC-6; SR Class 6Pul; TS Class 6, a tram type in Trondheim, Norway; Class 6 truck, a US truck class for medium trucks, up to 26,000 pounds weight limit; VR Class Sm6
The number of Americans applying for unemployment benefits fell markedly last week following a big increase the week before. Jobless claim applications declined by 22,000 to 220,000 for the week ...