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Course Hero was founded by Andrew Grauer at Cornell University in 2006 for college students to share lectures, class notes, exams and assignments. [4] In November 2014, the company raised $15 million in Series A Funding, with investors that included GSV Capital and IDG Capital. Seed investors SV Angel and Maveron also participated. [5]
Due to the large size of the La 3+ ion, La 2 O 3 adopts a hexagonal 7-coordinate structure that changes to the 6-coordinate structure of scandium oxide (Sc 2 O 3) and yttrium oxide (Y 2 O 3) at high temperature. When it reacts with water, lanthanum hydroxide is formed: [37] a lot of heat is evolved in the reaction and a hissing sound is heard
Lanthanum hydroxide does not react much with alkaline substances, however is slightly soluble in acidic solution. [2] In temperatures above 330 °C it decomposes into lanthanum oxide hydroxide (LaOOH), which upon further heating decomposes into lanthanum oxide (La 2 O 3): [4]
(Reuters) -Canadian Prime Minister Justin Trudeau on Saturday condemned violence and antisemitism at anti-NATO and pro-Palestinian protests in downtown Montreal on Friday night, where NATO ...
Lanthanum oxide is used in optical materials; often the optical glasses are doped with La 2 O 3 to improve the glass' refractive index, chemical durability, and mechanical strength. [8] 3 B 2 O 3 + La 2 O 3 → 2 La(BO 2) 3 [clarification needed] The addition of the La 2 O 3 to the glass melt leads to a higher glass transition temperature from ...
Since its launch in 2011, the CFPB has distributed more than $3.3 billion to consumers harmed by a range of illegal practices, such as student loan and mortgage relief scams and predatory lending.
Data from flight tracker FlightAware showed a plane leaving the small airport at 2:07 p.m. before its flight ended at 2:09 p.m., which is the time that police said they received a notification ...
Lanthanum(III) iodate can disproportionate and decompose to a periodate when heated: [2] 10 La(IO 3) 3 → 2 La 5 (IO 6) 3 + 12 I 2 ↑ + 27 O 2 ...